Watching Heather Graham pose in a pair of baby-blue roller skates on a gorgeous L.A. day in late February, it's almost impossible to believe it's been nearly three decades since she starred as Rollergirl in Paul Thomas Anderson's cult classic Boogie Nights. While the actress hasn't changed much on the outside (she still has that sweet smile, blonde waves and killer legs), she's gone through quite a profound internal transformation since her early days in Hollywood. "I didn't really know how to stand up for myself. I had to learn how to set boundaries.