Red Dead Revolver - Xbox

The controls are just complex enough to allow depth, without becoming fiddly, and allow you to use cover appropriately, and fight hand to hand and with a huge range of different weapons. The best bit though is the bullet time-esque "Dead Eye" mode which allows you to select multiple targets in slow motion and then switch back to normal time and blast everyone away instantly, just like Clint Eastwood. With sections on horseback, a number of missions (perhaps too many) where you control a side character instead of the eponymous Red, and tons of references to classic movie moments this has just about everything you could ask for from a cowboy shooter. --David Jenkins