Following last year's rumors and subsequent confirmation, SEGA has officially announced The Dreamcast Collection for Xbox 360 and PC. It's due to launch in North America on February 22, with a European release coming February 25. http://www.destructoid.com/the-dreamcas ... 1648.phtml
The Dreamcast Collection features the games that have been released on Xbox Live Arcade, Sonic Adventure, Crazy Taxi, SEGA Bass Fishing, and Space Channel 5 Part 2. They'll feature everything seen in the XBLA versions, including enhanced graphics, online leaderboards and Achievements.
The 360 version will come to retail stores, while the PC alternative can be obtained through digital sources.
If it's cheaper than picking them up separately on XBLA then I might nab this. I remember reading the ports weren't great but if the price was low enough then I'd definitely get a bit of fun out of this collection.
There's also rumblings about a second pack at some point. Wonder what they'll put in that?