The Big Bang Theory, which ran for 12 seasons, made Leonard Hofstadter and Penny endgame, but that doesn't mean they didn't have their own string of love interests. Leonard and Penny broke up and got ...
While it is tough to imagine The Big Bang Theory star Johnny Galecki playing any other character than Dr. Leonard Hofstadter, the actor was almost cast as Sheldon Cooper. Galecki previously revealed ...