Oh man, those moving clouds! Amazing stuff!
Even the little things like a second hatch opening or Cloud City passing by at stupid speed when it closes. Vader's saber turning off, smoke from Luke's limb. Awesome!
Is the Falcon shot at 4:20 reused from the arrival at Yavin 4 in ANH? Probably not but it looked familiar. Nothing wrong with it though, looks great!
Edit: Oh and "Bring my Shuttle!" Fucking yes! :D