Crimson is great. So is Rainbow Six 3, SSX 3, Top Spin....with Xbox Live.
Cross off Rising Sun from the list. It is being universally panned as a good looking, BUT flat, buggy game. Gamerankings.com has the scoop.
I don't know what games you're into, but upcoming highly previewed games to look into are: Ninja Gaiden, Metal Arms, Deus Ex 2, Prince of Persia, Counterstrike, Project Gotham Racing 2, Armed & Dangerous, Need For Speed Underground, Tiger Woods 2004, Links 2004, NBA Live 2004, Kill Switch, Sega GT Online, and FIFA 2004.