"The Spaghetti Catalyst" Full Episode
"The Spaghetti Catalyst"
(Season 3 | Episode 20)
21:0
After Penny and Leonard break up, Sheldon goes behind Leonard's back to hang out with Penny.
Original Air Date: 5/4/2010
After Penny and Leonard break up, Sheldon goes behind Leonard's back to hang out with Penny.
Original Air Date: 5/4/2010
