If you've just tuned in, there's a next generation DVD "war" going on to vie for the cash you mooch from your parents. Our veteran readers probably already made up their mind about which format they'll support, but the choice isn't as clear to the rest of us.
The humor site Cracked gives an illustrated tour of what you should know about the differences between HD DVD and Blu-ray, including what you should buy. Somewhat more entertaining than reading a dry technical disassembly of each format's specs by your EE professor, but not as informative.
Format Wars: CRACKED Looks at the NextGen DVD Players [Cracked - Thanks Doc!]