Johnny Galecki contemplates a difficult question here. The actor was a popular presence at Comic-Con.
Johnny Galecki may play a nerd on the show Two and a Half Men, but the actor is anything but.

TBBT Quotes

Amy, I excel at many things, but getting over you wasn't one of them.


(Singing) Thor and Dr Jones, Thor and Dr. Jones. One plays with lightening, the other plays with bones.

Howard and Raj