Curious about how you can watch all of the National Lampoon "Vacation" movies in order? It's easier than you might think and we've got all the info you need.

Johnny Galecki is an American actor. He rose to fame as David Healy on ABC's Roseanne (1992-1997). Galecki reprised the role on the Roseanne revival (2018) and its spinoff The Conners (2018-2019).