This is seriously the juiciest Season Finale clip ever! It's a bit random though and doesn't follow the actual timeline of "Much 'I Do' About Nothing", so that means that the scenes you'll see here do NOT come in sequential order.
In the first cut we see Dan and B plotting against Darth G. Near the end, Blair says "Don't worry virgin, I'll talk you through it." hahaha :D
There's also a scene during the reception where Chuck talks to Nate about The Captain buying drugs and reveals that he "WAS" in love with Blair! (eek! wrong tense Chuck!).