No offense, but the Wii controller looks fun as shit for CERTAIN games. FPS, tennis, fishing, maybe a few others. They also are showing a shotgun prototype peripheral that the Wiimote slides into.
Supposedly the system has 4 controller ports for Wavebirds and/or this new classic controller type that looks like the SNES controller and plugs into the Wiimote. So, yes, you will be able to use a reg controller.