I think "Charlie Bartlett" is in the process of becoming a cult classic, much in the vein of John Hughes-esque cinema. The humor is wry and sarcastic, with Anton Yelchin's energetic performance driving the pack. The irreverent yet accessible quirkiness of the different roles in the film make this an interesting ride, one that made me laugh out loud several times. A nice commentary on what it's really like to grow up.
Enjoyable, though repetitive in places, I agree it's a refreshing look at the 'teenage angst' type genre, which certainly has more to offer than the standard, - new boy comes to hostile school environment-new boy embarks on risky business to be popular-new boy ultimately becomes popular anyway - format. Anton Yelchin's performance admirably encompasses resignation and detachment with teenage energy and foolishness.