Recommendations for XBox 360 games

[LucyJones]

Dh has bought himself one of these and as our anniversary is coming up soon I thought i'd get him a game for it.
He has only got a Star Wars one, Tomb Raider, Oblivion and Enchanted Arms.
Anyone got any suggestions? Thanks

Halo series (run around on spaceship and other planets, shooting aliens)
Call of Duty series (run around in europe shooting nazi troops...occassionally hide behind a wall/tree/tank and shoot nazi troops)

halo 1 & 2, gears of war, prey, lost planet, oblivion, i could go on and on. my dh loves all the ghost recons, rainbow six type ones

thanks
is Crackdown any good?

Does he like racing games? If so Forza, PGR3, loads of others