Aired Saturday July 24, 3:40pm - 4:10pmon E4
The Big Bang TheorySeries 2 Episode 22: The Classified Materials Turbulence
Things begin to look up for Leonard when Penny makes a surprising revelation on her second date with Stuart, while Wolowitz enlists his friends' help when he discovers a critical design flaw in his project for NASA.
- Original air date
Cast and crew