Yes.
Now go the hell out to the store and get it.
Okay, longer opinion: it is a very good game, a great one if you like cyberpunk. While you don't have to play Deus Ex to understand (DE: HR is a prequel), if you just don't care much for the genre, it won't do it for you. It is still a very good game on its own, but if you don't care about cyborgs and augmentation and such, you probably won't care too much about what this game is really about.
On the other hand, it has a very good penchant for letting you choose how to accomplish a task, and there are always many ways to do any one thing. (Except the boss battles. All games have flaws. There are only three battles anyway.) Jensen and the secondary characters Pritchard, Malik, Sarif, and a few others are well-rounded and interesting. While it behooves you to be a Good Guy if you want to do all the subplots, you can be a total ass if you'd like. Things you do have consequences; if you kill certain optional people, the game changes. If you don't kill anyone, Pritchard makes fun of you for not doing so. The story is very interesting; the world is just open enough for my taste but isn't so huge you get lost in it Oblivion-style; it has some replay value if you're into trying the different paths such as "don't kill anyone" and "heavy weapons" and "hacker guy."
I'd say don't listen to godofallu -- if you're playing this game just to be a shooter, either be satisfied with not being able to make use of many upgrades, or realize you're playing the wrong game. This isn't a stealth game, or a shooter, or whatever -- it's a mix. If you don't splash multiple paths, of course you're going to lock out some options.
All in all, one of my favorite games. Grain of salt: I'm a huge cyberpunk fan, and also I was a fan of Deus Ex. Otherwise: freaking go play it man.