After beating the 76ers in a seventh game in the conference semifinals, the Celtics will return to the Eastern Conference Finals after the Heat bounced them in the second round last year. The Celtics took down the Hawks in six games before facing the Sixers. The Heat are coming off a six-game series against the Pacers after they knocked out the Knicks in five. Click through this gallery for the keys to the series, and then tell us who you think will win.