Right off the top of my head, I think Sam should know that:
1) Quinn and Puck are back together; 2) The basketball team has been formed and Puck is in it as an enforcer (this is in case Sam would like to play and keep off that winter weight); and 3) The Glee kids, under the alias of SLUSHIED (and I can't remember what that stands for anymore) are going to present a production of American Idiot.