I knew that Adam Sandler was Jewish but I had no idea that he might be conservative, as many Lubavitchers are.
Chabad gets a lot of high-profile celebrities to participate in their telethon who are not observant or even Jewish.
I think the only Hollywood celeb (since "Dr. Laura" dropped out last year) who follows the faith is Jon Voight, a "Noachide." Can't say the same about his daughter, though.