The
Panasonic PV-GS320 is a great camera for the price; it has a 1/6" 3ccd sensor (good in low light and also has vivid color reproduction). It does use miniDV tapes, but I've not seen many good HD cameras yet in this price range. I'd also say you'd want to consider buying a decent tripod to go with any camera you purchase, as the differences between hand-held footage and on a tripod can be night and day.
Something handier to also consider would be the
Pure Digital Flip Video Ultra Camcorder. It records what I think is 640x480 resolution video for 60 minutes, and is easily transferable to computer (but would not have the same quality audio or video).
Not to plug, but I'd highly recommend to check out
B&H Photo, they are a great and reputable online dealer, and have a large selection of camcorders to browse.