If you're in the market for a new HD camcorder that is compatible with the just released iMovie '08, Apple has published a list of camcorders that support iMovie '08. Categories are broken broken out into Tape Based Camcorders, Tapeless Camcorders and Other Tapeless Devices.
The support page also highlights Known Compatibility Issues including the fact that AVCHD DVD camcorders are not supported.
Click on the link below to view the page.