We have been wasting time on famousmormons.net. I came across a few I knew about and a few I didn't:
Troy Dunn from "The Locator". Supposedly he is currently serving as a Bishop in his ward.
Lacey Schwimmer of "So You Think You Can Dance" and "Dancing With The Stars" fame.
Katherine Heigl from "Grey's Anatomy". She admits she is not active but admires the religion.