Penny and Leonard try and talk out their little awkward hookup they have in the season three premiere last week.
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Leonard and Penny drink some peppermint schnapps in an attempt to try and get a little sexual chemistry going on for their awkward sex life.
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Hairy Leonard is very eager to see Penny upon his return from their three month expedition and is a little upset at Sheldon for crashing their good makeup time.
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It looks like Leonard and Penny will make up for lost time when Leonard returns from his arctic expedition in the season three premiere of The Big Bang Theory.
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Will Penny and Leonard get together or won't they? Fans of The Big Bang Theory will find out in season three.
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Penny gives Leonard a gift... a blanket with sleeves... as his going away present before he leaves to the North Pole.
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When Wolowitz refuses to leave his hotel room when he can't get over Leslie, Leonard and Raj set him up with a hooker named Mikayla (Jodi Lyn O'Keefe).
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Leonard, Raj and Wolowitz head out to a local bar for Ladies' night. Wolowitz explains to Raj why he can't order a girlie drink during Ladies' night.
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TBBT Quotes

I was expecting applause but I suppose stunned silence is equally appropriate.

Sheldon

Sheldon: Nothing more fun than a paradigm shifting evening of science.
Penny: (to Leonard) And you thought it was soaping me up in the shower.