During the second Bespin level (Episode V, Chapter 6), Leia has a long braided hairdo. In the cut-scene at the end of the level (depicting the escape on the Falcon) she has the "cinnamon buns" hairdo from Episode IV.
In the level with the wookie soldiers,one of the wookie soldiers is shown captured and starts to groan.When the second wookie soldier is shown captured he completes the groan that the other one of the wookie soldiers started.
When someone jumps into a fast vehicle and drive it further away from the other characters,the other characters catch up very fast.Usually the characters aren't fast enough to reach the other character in time.