As Leonard and Raj go to get Wolowitz from his house for their Halo team they overhear his mother fighting with his new girlfriend.
Wolowitz shows up in an awfully feminine robe after sleeping with Penny's friend and forcing Penny to crash on Leonard and Sheldon's couch.
Penny joins the boys for a game of Halo and they're a little shocked that she's not bad at the game.

The Big Bang Theory Season 1 Episode 7 Quotes

I don't know how, but she is cheating! Nobody can be that attractive and this skilled at a videogame


Can we please make a decision? Not only there are children starving in India, there's an Indian starving right here!

Koothrappali [on waiting for food]