Returning from the renaissance fair.
Sheldon and Leonard at Howard's bachelor party.
She (Amy) is not for you! Not for you!
Playing giant Jenga.
De"pants"ed!
At the comic book store.
First look at the apartment.
Leonard pulling out his "glow stick".
Past roommate message.
Signing the roommate agreement.
Leonard and Sheldon.
Well done, my friend.
Waking up Leonard.
Playing an invisible game of Risk: LOTR's edition.
Sheldon listening to loud noises to increase his anxiety level.
Working on Leonard's idea.
Talking about ALL his cats.
Sheldon and Leonard.
Two noses under bandages.
Alfred adjusting Bruce Wayne's tie.
Driving Sheldon to work.
Sheldon and Leonard.
Open up this jar of asparagus.
Because this is NOT STAR TREK!!
Minstrels will write songs about you.
Leonard and Sheldon.
Sheldon and Leonard.
We're losing Stephanie, Leonard.
Dr. Stephanie does nice work.
Leonard and Sheldon.
You wrote a paper on my idea?
Leonard is in the shower.
Sheldon and Leonard.
It's right here in the roommate agreement.
Sheldon and Leonard.
Leonard suggests revenge of a non-lethal type.
My photo with Bill Gates.
Sheldon thinks that Leonard is offering him an apology.
Sheldon tagging his clothes.
Sheldon and Leonard.
Leonard and Sheldon.
Leonard mad at Sheldon.
Leonard chosen first. What just happened?
Talking about dinner with Zack and his wife.
Smirking over Leonard's comments.
Discussing fathering Zack's child.
The guys waiting while the girls shop.
Sheldon is unhappy that Leonard lied to him.
This could be real big.
The guys sending their research out to the internet.
Leonard gets a sticker.
We did have an adventure.
Thank you for letting us off with a warning.
Sheldon has a car game called "I don't spy" about sub-atomic particles.
Sheldon unhappy that Leonard got the right answer.
Excited at seeing the Skywalker Ranch front gate.
Talking to the guard at the Skywalker Ranch gate.
We're just big fans and wondered if we could get in.
Sheldon looking for flaws in Amy's favorite comic strips.
Sheldon after his night with trains.
Leonard hopes for a gift, as Sheldon examines his gift.
Disaster drill!
Sheldon is worried about Leonard's operation.
Sheldon working on the odd that Leonard will die during his operation.
Leonard laughing at Sheldon after he was insulted by Prof. Hawking.
Groomsmen just prior to the wedding.
Leonard at the Caltech cafeteria.
Sheldon is worried about Leonard's operation.
Sheldon and his disaster kit.
Leonard watching Sheldon playing Wii Sports.
Bringing dinner home.
A $500 million!
Maybe he is checking for a leak.
Heading to Texas.
I thought I said no.
Filmed on location.
Are you doing anything?
Sheldon and Leonard.
Sheldon pacing (jogging) as the Flash.
Sheldon bothering Leonard.
The apartment flag.
You're being reasonable.
You don't want to live like this.
New rental agreement.
Leonard and Sheldon.
I want what's best for Penny.
Rare Sheldon hug.
Comforting Sheldon about Professor Proton's death.
Leonard seeking advice from Sheldon on Penny.
Discussing with Sheldon his first date with Penny.
Discussing with Sheldon his first date with Penny.
Discussing with Sheldon his first date with Penny.
Leonard and Sheldon in the unaired pilot.
Donating genius sperm.
Sheldon telling Leonard what he thinks about his calculations.
Sheldon claiming a new spot.
Sheldon in his war against a dining room table.
Stay, Sheldon!
Leonard is happy for Sheldon.
Hug.
I'll always be your problem.
Leonard and Sheldon.
After today you are officially and more importantly legally Amy's problem.
Don't be silly, Leonard. I will always be your problem.
Happy glance.
Leonard doubts his relationship with Penny will last.
Is it mathematically possible to tip a cow?
Sheldon making Leonard walk a mile in his shoes.
Leonard is worried that Sheldon might freak out over an unreturned DVD.
Leonard doesn't want Sheldon to freak out.
Drunk Sheldon spilling Penny's secret.
Both working in their apartment.
Leonard gives Sheldon relationship advice when the latter gets in a fight with Amy.
Sheldon unsuccessfully tries to zap Leonard's brain.
Leonard and Sheldon - pilot episode.
The itzy bitzy spider...
In the pilot.
Leonard looks over at Penny's as Sheldon unpacks his life-size Spock cutout.
Leonard and Sheldon look over at Penny's apartment.
Roommate agreement glamorization.
Leonard and Sheldon.
Leonard and Sheldon.
Sheldon finds that Leonard returned after he moved out.
Discussing mustard's fun fact.
Sheldon wakes up Leonard.
Discussing roommate agreement.
Sheldon interrupts Leonard setting up a laser experiment in his laboratory.
Leonard and Sheldon.
Sheldon and Leonard and their Star Trek transporters.
Playing 3-D chess and bitching about their old ladies.
Midnight disaster drill!
Can't I stay a little longer?
Leonard and Sheldon taking turns discussing their problems.
Sheldon and Leonard in their apartment.
Going to get Penny's television.
Sheldon and Leonard at the movies.
Sheldon and Leonard.
Sheldon has a throat tickle.
Penny joins them.
Not so hard after another Sheldon comment.
This is harder than I thought.
Amy should be happy.
I want to learn how to slap people.
Demanding satisfaction from Leonard.
You have a very symmetrical face.
The guys wondering if the helium is Federal property.
The bodies were found in a nondescript white van.
Sheldon has some bad news.
What does this tag say?
Working on his whiteboards with Sheldon.
Trying a higher authority.
Physics work.
Are you humming?
That Asian man wasn't your Meemaw?
Waiting at the airport for Meemaw.
You're my brother.
Yes, Sheldon can write the contract.
As Sheldon reaches for a butterfly, Leonard gives him a shock.
I don't like this at all.
She's still not answering.
Penny telling them not to mention the hook-up to Beverly.
We have to put in the late hours.
You don't have an addiction!
Sheldon falls asleep.
Past Sheldon's bedtime.
Leonard and Sheldon trying the scanner.
Sheldon finally gets his sleep.
Buddy.
I'm not as smart as I thought.
Morning all ready?
Your "Where's Waldo" is over there.
Sheldon trying to decide about Amy.
Searching for Leonard's missing figures.
Their ladies are lying to them.
Klingon.
Klingon.
Klingon.
Klingon.
Leonard hiding Penny's new decorations.
Entering the geology department.
Sheldon hurt his feet.
Calming Sheldon down.
This is my anger and I will throw it away.
We got that at Comic Con.
I want the apartment flag.
Leonard disgracing the apartment flag.
Sheldon found the cuckoo clock.
Collectible bought at Comic Con.
The official apartment 4A flag colors.
I want to keep the flag.
Turn back on the Wi-Fi.
Arguing with Leonard.
Playing 2D chess.
Discussions.
Playing 2D chess.
Sheldon asking Leonard about his show size.
Sheldon telling Leonard in how many moves he's going to lose in.
Leonard wants to talk to Penny right away.
Hot tea for his friend in pain.
What game would you be happiest at losing at?
The Pythagorean theorem used to thrill Sheldon.
A day with trains.
If Penny is miserable, I'll be miserable.
Thank you!
Why did I ask you?
Working on a retraction statement.
This is for Amy's birthday dinner.
At the Comic Book Store.
You get to be the engineer.
Try and be a supportive boyfriend.
Try and be a supportive boyfriend.
Leonard and Sheldon.
Leonard apologizing to Sheldon for lying to him.
We were like Batman and Robin.
Looking for Barry and finding Leonard.
Leonard and Sheldon both scrubbing out irradiated grease
Leonard and Sheldon.
Romantic dinner.
You can't afford to lose another best friend.
Leonard talking to Sheldon about his friend Tam.
3D chess.
Talking about his new equipment.
Intelligent vengeful crows?
Testing Leonard's loyalty.
I'm having an affair.
Why throw that back into my face?
Sheldon finds Leonard on the couch.
The Cafeteria.
Sheldon finds Leonard.
Amy!
Sheldon playing a Western game.
What happened to your horse?
Shut up!
Shut up.
Is that what I would’ve sounded like?
Leonard when are you leaving to pick your mother up at the airport?
Well, he did say if he fell asleep, we were allowed to slap him awake.
Wow Amy, you look amazing.
What kind of tea is appropriate when you feel unmoored from reality?
I don't know. Earl Grey?
Leonard. We need to do something about your wife.
She's not sick, Sheldon.
You're right. I can't catch that.
OH no.
That was exhilarating!
You have just found out that a woman who has loved and cared for you for twelve years is pregnant...