I think one of the bike shops there has regular rides, too, I don't live up there, so I don't have any personal experience with them.
Edit: The one I was thinking of: http://www.thebicyclepath.com/

This group (person?) has rides on occasion, I did a Denim Ride up there a while back: http://bikedenton.wordpress.com/

The Turkey Roll charity ride is in a few more weeks, and is fairly decent.