It'll be hard to find, but Ikaruga is awesome. Also cdrober is right, Segagaga is fantastic (assuming that you can read JP or are willing to read a translation guide while you play), aside from those most everything thats really good has been posted here, but some I would recommend are: Bangai-O, Chu-Chu Rocket, Jet Grind Radio, Skies Of Arcadia, Marvel Vs Capcom 2, Soulcalibur, Gunbird 2, Crazy Taxi 1 and/or 2, Shenmue (duh, and if you can get a EU copy Try to get Shenmue 2, your stuff from the first will carry over to the next game), Sonic Adventure 1 and/or 2 (I liked 1 more than 2, but both pale in comparison to any of the sonic games before them), Space Channel 5, Powerstone 1&2 (yes, both), D2 (might help to play D first though), Sword Of The Berserk: Guts' Rage (awesome hack'n slash), Dyanmite Cop! (I can't stress this enough, GET THIS!), MDK 2, and Zombie Revenge (very similar to Dynamite Cop!, just with zombies..)