Seann William Scott has left rehab.

The 34-year-old 'American Pie' actor was voluntarily admitted to a Clinic in March for "health and personal issues" but has now left, celebrating by going to see a Knicks basketball game in New York.

A source told website TMZ.com: "He completed the 30 days successfully - he's doing great.

"Seann dealt with an issue and hopefully he can do 'American Pie 4' and re-energise his career."

Despite parts in films including 'Role Models' and 'The Dukes Of Hazzard', Seann has remained best known for playing obnoxious, hard-drinking college student Stifler in the 'American Pie' franchise, and fans have struggled to separate him from this Alter Ego.

He said: "I walk down the street and someone's like, 'Hey we'll buy you a shot'. And I'm like, 'No, I'm OK.' They're so crushed, like 'What? But you were in 'American Pie'' I say, 'It's a movie.'"

Although previously distancing himself from the character– which he last played in 'American Pie: The Wedding' in 2003 - Seann is in talks for a fourth film in the series, 'American Reunion'.