I think the game is awesome (still haven't finished the campaign though), better than Resistance: Fall of Man, which I also think is very good overall. I haven't played all the shooters out this year, but for me I think this is the best shooter for the year!. 8-)
This game is a lot of fun! The scale is great, very hectic scenes, amazing multiplayer functionality, etc. I am having more fun with it than I did with Half-Life 2, my previous favourite!