Hey, kids, here's some sound advice for you: just say no. Unfortunately, Dan Dunne (Ryan Gosling), the antihero of Half Nelson, didn't get the memo. This smart, idealistic teacher has a bad coke habit - so bad that he's not above smoking crack in the girls' locker room. Lucky for him, Drey (Shareeka Epps), who has plenty of issues of her own to deal with, becomes one of Dan's most dependable friends. The movie handles their relationship with delicacy and intelligence, but let's be honest: when a twenty-something teacher is dependent on one of his students for help because his drug issues, he's not exactly doing his job all that well, even if he gives really inspiring lectures.