The following "may" be considered spoilers....
Not too long back, Capcom mentioned that there will be multiple cut-scenes in RE4 (obviously), but that's not the suprise yet. They stated that some cut-scenes will give you control of Leon and here are some examples. I previously posted the pictures that you saw where Leon was fighting another human during a cut-scene. Well, although it is a cut-scene, you'll have control over Leon by hitting buttons that will dodge and attack and so forth. Another small example of this is the corridor that is guarded by lasers. A cut-scene will take place but you'll still have to do work to jump, dodge, duck and do fancy tricks over the laser beams.
According to Capcom, these interactive cut-scenes are very intense and won't be as easy as they sound. Other minor examples would be the cut-scenes where you have to push 'A' as fast as you can to out run the giant boulder or swim back to your dinky boat in the lake after the monster knocks you out of it.
Other information:
The official website for the chainsaw controller can be located
here.Some new pictures located
here show some concept art and an action scene that'll take place on the mine carts.
A new screenshot from the upcoming trailer
here.Take a look at this cute covering for your gamecube
here.Pictures
here that show the laser corridor scene that I mentioned earlier. Just scroll down the page until you find them.