Johnny Galecki is a Belgian-born American actor, best known for his roles as David Healy in Roseanne, Rusty Griswold in National Lampoon's Christmas Vacation, and as Leonard Hofstadter in The Big Bang Theory.
The entire MCU, the dialogue hasn't changed but featuring a cast of comics (preferably stand-up as well as just comic actors). Suggestions should make some degree of sense.
