Penny tries to seduce an abstaining Leonard to ruin his "donation" for her ex-boyfriend, Zack (Brian Thomas Smith), and his wife, Marissa (Lindsey Kraft). Also, Wolowitz, Bernadette, Anu (Rati Gupta) and Koothrappali turn Koothrappali's canceled bachelor party into a couple's trip aboard the Vomit Comet.
Did You Know?
The reference Sheldon made to the Underdog balloon getting away at Macy's parade was always used as part of a comedy sketch in the first season of Friends. See more
Can I get you something to drink? Maybe a beer?
Sure, if you're having one.
And why wouldn't you, since you're not pregnant?
History of Everything
Written by Barenaked Ladies
Performed by Barenaked Ladies
[Series theme song played during the opening titles] See more