7) Harry Potter and the Half Blood Prince -- too sad.
6) Harry Potter and the Chamber of Secrets
5) Harry Potter and the Order of the Phoenix
4) Harry Potter and the Goblet of Fire
3) Harry Potter and the Sorcerer's Stone -- started it all.
2) Harry Potter and the Prisoner of Azkaban -- the one that blew up the series.
1) Harry Potter and the Deathly Hollows -- not the funniest, but cemented the legacy.