Panzer Dragoon Orta, Knights of the Old Republic 1+2, Jade Empire, Morrowind, Links, Otogi, Jet Set Radio Future off the top of my head for the original Xbox. Gears of Wars & Halo series are good. I always enjoyed the Fable series, even 3. Love both Forza series. Mass Effect. The 360 had a lot of good shmups too, some were region free as well.