It really depends on what your looking for - There are at least 2 dozen 'great' XBLA games, and tons more that are good if they're your cup of tea.
I'm not the most experienced with XBLA, but most of the recommendations so far have been along the lines of the 'must have' games.
I can't want to start development on my XBLA/CG game :)
Back from the dead, I'm afraid.







