I think early-80s hit "Flashdance" (http://en.wikipedia.org/wiki/Flashdance) is probably the film she's still best-known for, although her biggest role in recent years was as one of the main characters in the first six seasons of The L Word. Folks who haven't seen the movie or read the book and don't want to risk spoilers shouldn't look her up on IMDB, Wiki, etc., though, as that may help connect the dots to figure out what the big twist about Daphne Monet is going to be.