There are several ways to watch, or even burn HD.
1) Connect your camera directly to TV. This requires EITHER a camera that has HDMI or virtually all cameras have HD Component output. OR a TV that can connect. I have a HD camera with HDMI output that connects directly to my HD TV. Only problem, I can't edit and it ties up my camera.
2) Understand there are 2 HD formats when it comes to DVD's. HD is Hi Definition, but Hi Definition DVD's come in 2 formats. Blu-Ray (called BD discs), and HD-DVD. So don't say HD-DVD when you really mean a generic Hi Definition DVD disc. HD-DVD is a particular FORMAT (not brand) of DVD.
3) Blu-Ray discs are completely different than the DVD's we not have. They use a red laser, must be burned on a very expensive special Blu-Ray disc, and of course, played on a Blu-Ray DVD player. So you cannot burn a Blu-Ray DVD yourself without some very expensive investment - the burner, the media, and the player.
4) A HD-DVD has similarity with the standard defintion DVD's we are familiar with. HD-DVD uses a blue laser, as does regular DVD, but to get a high capacity HD-DVD (15 gig or 30 gig), you again need a special HD-DVD burner, and HD-DVD media. They're about half the price of Blu-Ray, but still special and expensive.
5) HOWEVER - you CAN burn a HD-DVD, a genuine Hi Definition HD-DVD disc with your current DVD burner, AND on regular DVD-R media. That's right. There's just one catch - regular 4.7 gig DVD-R (or +R) media can contain only 23 minutes of Hi Definition video. Not enough to copy a commercial movie, or record a movie or TV program, but it is enough to edit your HD from the camcorder and record it, and play it in genuine Hi Definition. I've done this several times. THEORETICALLY you can get 40 minutes on a DVD+R DL (double layer) 8.5 gig regular DVD media, but I have not been successful in doing this. The one time it successfully burned, the disc skipped in playback on my new this Aug 07 month Toshiba HD-DVD player. Still, my single layer regular DVD-R media works great.
6) You will need software to capture your camcorder video in HD, edit it, and then to record HD-DVD on regular DVD-R media. I use Ulead software. Download a free 30 trial of Video Studio 11 (I use their pro version, which takes days to learn how to use). There are other software programs that I've herd will do this also, but I only use and am familiar with Ulead. VS11 is under $100, but you can download the free 30 day trial and make sure it works for you. Make sure you update the firmware of your regular DVD burner also.
So, the short answer is - yes - you can. 23 minutes worth!