Light saber duel with some emotional heft to it (it also features a double-bladed saber). The choreography is great though the saber effects aren't quite as good as Ryan & Dorkman (the costuming leaves something to be desired too).
A shabiki put together this alternate trailer for Episode 3. A few rough spots, but on the whole it's a well done trailer. It certainly captures the tension and plot of ROTS well.