As I was just surfing around this weekend, I am suprised and how much information is still available and how many people are still selling Laserdiscs. DVD is a superior format for sure, but there are many folks out there that still love this format, including me. There are still many films that have not been released on DVD so Laserdisc remains the best format to view them (e.g. Star Wars Trilogy, Indiana Jones Trilogy - though both will be on DVD is a couple years at the most). It is also great to be able to pickup 10 movies to add to your collection for about $4.75 each.
Check out this auction...
LOT OF 9 LASERDISCS ACTION, SUSPENSE

Here are a few other links of interest...
Bob Niland's LaserDisc FAQs
Leopold's Audio/Video Page
Jeff's Used LD/DVD Finder
DTS Digital Surround LaserDisc
LaserDisc Related Sites