Making any sort of Best Of List is always tricky, personal taste will always differ depending on what kind of games you're used to and how much access you have to certain games and consoles - I didn't own a NES 'til everyone was thinking about getting the N64, blame my Amiga loving father.
I prefer a Favourites List, with a little bit of input from many different people, so asked our Facebook fans what they reckoned were the best games the Dreamcast had to offer. The results were cool and left us with a nicely varied collection of games you have to play on the Dreamcast!
This is a great list for all types of players, some good group play options such as Crazy Taxi, Armada, The House of the Dead 2 and a load of fighting games including Power Stone 2, Street Fighter 3 and a "million other Capcom beat 'em ups", according to our artist Thomas.
For some co-op action you can't beat Ikaruga and Gunbird, personally I'd pick Ikaruga every time.
Or if you're looking for something to enjoy alone you can always go for Shenmue, Skies of Arcadia, Sword of the Berserk: Guts' Rage, Fur Fighters or the nice n' easy Sonic Adventure. We also had someone mention fan made Zelda game, Return of the Hylian which I've never tried, time to hook up the Dreamcast again and give that a go!
If I've left any out feel free to add them in the comments, I'm always open to trying new games on all consoles new and old!