Awesome Revolution glitch, discovered by yours truly:
In thee Globox House Teensie Circle, jump up on the wooden rickety-looking bridge and do a running jump off of it. Then helicopter forwards towards the mountains. Keep going forwards, even when the screen goes blue and stuff. When the screen returns to normal and Rayman is jet black, you can helicopter all the way down to the forest below...though you can't walk on it...
Revolution is a bit too fucked up. If I was in charge of it, I would have made it an exact copy of the DC version, but with Grolem 13, the extra levels and slightly improved graphics.