One more thing I missed, well 2 kinda, actually 3. Many MS cameos (not to mention Felini's Meteor Hopper bike!) in the next episode preview of course, including V's Conto, X's Octape, Seed MSV's Hyperion, Kampher Amazing trashing some DOM Troopers, and Wing EW's Heavyarms Custom which is probably piloted by this guy seen at the party when Sei first walks in before Mao finds him.
The third being the obvious "Mission accepted" line borrowed from Heero as this week's tag line.