Gamer isn't going to change anything with it's story - it's a good one, but a silly one. If you're looking for a serious action movie or something to really make you think, this isn't it - not only is it a "videogame" movie, it's also done by the guys who did Crank and Crank 2. At this point, most people will probably walk away from the idea - if that doesn't turn you off, you might just love this movie!
I was a big fan of the Crank movies and can "turn my brain off" to watch a cheesy sci-fi action movie and just enjoy the action, colors and effects. Gamer fits into this genre perfectly - it's got the cool action shots, the super-saturation colors and all the fancy CG overlays.
Where the disc really shines is on Blu-Ray. If you have a Blu-Ray player and an HDTV, this will really WOW you. Shot on the RED camera, the detail is incredible (even surpassing Crank/Crank 2). It doesn't stop there - the Audio kicks in with DTS-HD Master audio 7.1, both audio and video are 5-star worthy. Not giving up there, you get some great in-depth features (including an advanced video-commentary that does more than overlay footage on top of the movie (think Watchmens ultimate movie mode on Blu-Ray, where they can pause/stop and add content). They also throw in a digital copy (great for an iPad or iPhone). Overall an awesome package and well worth the cost. The movie won't win any awards, but if you can appreciate a stupid movie, give it a shot. It's not nearly as bad as everyone makes it out to be (at least on Blu-Ray!)