You Know Him As: The other killer in "Scream." The reality TV alum inappropriately dating a high school senior in "She’s All That." Most viewers remember that Sidney’s boyfriend Skeet Ulrich was one of "Scream’"s killers, but fewer recall that Matthew played his partner in crime despite having basically no discernible motive. (Although I believe that his offing of girlfriend Rose McGowan in a garage door may have had something to do with her cheating, which seems oddly vindictive given the fact that he continued to date her normally so as not to give away his plans.) He alluringly played the offbeat comic relief, and managed to swipe a lady from under Freddy Prinze Jr.'s nose in "She’s All That." Given the fact that Freddy’s character was the big man on an unrealistically good-looking campus that meticulously choreographed its prom dances, this was no small feat. Clearly, Lillard had it going on. Those who still had him on their radars in 2000 may have been impressed by his Shakespearean turn in "Love’s Labour Lost"… but, they’d soon be let down by his no less than five portrayals of Shaggy in various versions of "Scooby Doo."