Relatives playing together for the first time...

[88survivor]

Remember, acting together in an episode...

Billy Tate's Jimmy Baio and 80s teen hearthrob Scott Baio appearing in an episode of Fantasty Island...

http://www.youtube.com/watch?v=EeBKohb6DDU


The Oslen Twins on Full House

[dawsongirl]

Lucille Ball and Desi Arnaz Jr. on I Love Lucy, though I don't know how much just standing there counts as acting (he was only 4 at the time). So if not, he later appeared on The Lucy Show in the episode "Lucy is a Referee."

If husbands and wives count, then Lucy and Desi Sr. were first together in the 1940 film Too Many Girls.

[freshprinceofLA]

Tia and Tamera Mowry on sister, sister
umm and Kirk Cameron guest starred on his sister Candace Cameron's show full house