Whiplash, the opening night film at Sundance, features great performances from Miles Teller and J.K. Simmons. And it's about an intriguing subject, following an ambitious aspiring drummer as he goes mano-a-mano with a maniacal instructor. What's the cost of genius? The movie explores that question with appropriate thoughtfulness, even if its resolution isn't as satisfying as I might have liked. My review is up at Paste.