i havn't played it yet but as per this video review i must say it worth to buy. http://ginx.tv/reviews/deus-ex-human-revolution-video-game-review
Used to play it on pc 10 years back. Gotta tell you, it was pretty good back then... The 10 year "upgrade" has done a lot of good, --> Hitting the shop
i you love stealth game like tenchu, splinter cell, or metal gear solid, you'll love deus ex human revolution too.. It's true you also can play it in "ramboo" style, but don't expect the game will be like crysis or gear of war. The plot of the game also can be twisted by your gaming style.
I played this game but I did not feel good about it. action is too slow. wait very long before you get to fight.