A few links for anyone interested in the DC....
http://www.dcemulation.com/ -- for a bunch of DC info and homebrew stuff
http://schtserv.funurl.com/ -- some dude coded a Phantasy Star Online server!!
http://dreamcast.onlineconsoles.com/phpBB2/portal.php -- for other on-line play info, plus how-to's on setting up your very own Q3 Arena server.
http://consolevision.com/members/mterlouw/ -- on how to share your PC broadband with your DC
Plenty of good stuff for the DC.... just do a search on google....
If you're going to buy one and can handle it prior to buying, make sure the mfg date is 10/2001 or prior -- you'll thank me later. (the mfg date is on the bottom sticker)
edit: almost forgot
http://www.chanka.org/ -- for those that would rather play DC "backup" games on their PC's (and have a high-end machine)
edit#2: recommendations for the "15 for $50" deal at ebgames
1 ) Championship Surfer
2 ) Jet Grind Radio
3 ) Ready 2 Rumble boxing
4 ) Space Channel 5
5 ) Tomb Raider - last revelation
6 ) Trick Style
7 ) Carrier
8 ) ChuChu Rocket
9 ) Flag to flag CART racing
10) NBA 2k1
11) NHL 2k2
12) Phantasy Star Online
13) NFL 2k1
14) Speed Devils
15) Ultimate Fighting Championship
AVOID: Spirit of speed, NBA 2 Night, South Park Chefs Luv Shack, Sydney 2000, TNN Hardcore Heat