Shelon with Goatee

So what do you think of Sheldon with a little facial hair? You're going to get a chance to see him with a goatee in the season three premiere of The Big Bang Theory.
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Sheldon and Penny

Sheldon and Penny will never get together. Jim Parsons says these characters are just too good of friends.
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Sheldon is Angry at Stuart

Sheldon is angry at Stuart for ruining the latest Hellboy comic book for him with the spoiler of "it's mind blowing." He tries to get his revenge by ruining the latest issue of The Flash.
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Sheldon Sleeps in Penny's Bed

In erhaps the most ridiculous situation, Sheldon ends up sleeping in Penny's bed... and somehow this doesn't make the man happy! We'll trade places with you...
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Sheldon and Stuart Put Penny to Sleep

When Sheldon crashes in on Stuart (Kevin Sussman) and Penny's date, he ends up arguing with Stuart on comic books until they put Penny and Stuart's chances of getting lucky to sleep.
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Leonard Meets Alicia

Leonard and Sheldon greet their new neighbor, Alicia (Valerie Azlynn) as she moves into their building right above their apartment. Sheldon drills her with his usual awkward questions like does she like area rugs?
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Penny in Sweats

Penny brings in Chinese for the guys and hangs out in her sweats. Don't worry, for now Wolowitz still thinks she looks ravishing. It's only when the new neighbor shows up does Penny need to step it up.
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Penny is Stuck with Sheldon

When Raj, Wolowitz and Leonard ignore Penny in even her hot little dress in favor of the new neighbor, Penny is stuck with hanging out with Sheldon.
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Sheldon and Penny Make Berets

Sheldon and Penny sit down and sing a sea shanty as they make Penny Blossoms (Penny's hair berets). You have to hear / see it to belive it.
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Sheldon Lost His Seat

The gang eats Chinese food and Sheldon has nowhere to sit when his cushion seat is covered in paintball goo. We feel for your pain Sheldon.
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Sheldon and Penny at the Cleaners

Sheldon and Penny head to the cleaners to try and get a paint stain out of his couch cushion. We highly doubt that's going to work.
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Sheldon is Horrified

Sheldon is horrified when he finds a paint stain on his couch on next week's episode. Penny is going to get into some serious trouble for this!
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TBBT Quotes

Oh, Bernadette, please play my clarinet.

Raj's poem

Sheldon: I'll have a diet Coke.
Penny: Can you please order a cocktail? I need to practice mixing drinks.
Sheldon: Fine... I'll have a virgin Cuba Libre.
Penny: That's... rum and Coke without the rum.
Sheldon: Yes, and would you make it diet?