Ever since her breakthrough performance as a wide-eyed drug addict in “Drugstore Cowboy” (1989), actress Heather Graham had a hit-or-miss career that was punctuated with several winning performances amidst an equal amount of duds. She spent nearly the next 10 years looking to fulfill the early promise of “Drugstore.” But instead, she lagged in better-forgotten films like “Twin Peaks: Fire Walk With Me” (1992) – a continuation of her season two performance on the show – and “Diggstown” (1992), which was more notable for her off-screen pairing with older co-star James Woods than anything that