Rayman creator Michel Ancel talks about developing for the Wii and gives some Rayman Wii details on Eurogamer.

"Rayman will also be able to use creatures in the game. To ride them, you have to twist the Wii main controller in order to direct the creatures in certain ways. You can imagine that it feels very natural to control an eagle in the air or a shark under water, just by moving your hands in the direction you want to go."

** Update **
UbiSoft released the QA and there's a copy in our forum.