I met Traci at a Sci-fi convention several years ago when she played Jordan Radcliffe on the television series 'First Wave'.
The first movie that I remember seeing where she was a cast member was 'Cry-Baby', which starred Johnny Depp. A few years later she appeared in the ABC miniseries 'Tommyknockers', based on the book by Stephen King.
She's appeared in a number of other television shows (including 'Melrose Place' and 'Roseanne') and movies...and quite a few others that we won't mention on this PG rated site.
Here's the opening scene from Blade, where Traci plays a vampire: