I haven't finished the game yet, so I can't call this a review.....
Right now I'm playing Quake 4, a game I bought a few months ago but only now have gotten around to playing. Wow, it's actually pretty good. Once you get over the fact that the framerate dips really bad, the game is playable and it has this nice 'Half Life 2' style scripting going on (with characters talking and with a lot of nice 'cutscene-like' sequences). I like the storytelling that ID put into the game....looks like they're getting better at it. I'm sure the PC version has a much better framerate, so if you have a really powerful PC I'd recommend the game. But if you don't have a good PC but have a 360 instead, the 360 version isn't as bad as the reviews make it out to be. The framerate dips (thus far) don't seem to be messing up my aim, and there are lengthy segments of the game where the framerate is very smooth, even with many enemies onscreen.
If you like your games to use the entire color pallete of a rainbow, though, Quake 4 doesn't have that. It's a very dark game both in look and feel. No pastel colors in sight. So anime-fans need not apply. But for fans of heavy action, robots, cyborgs, and guns galore, this game delivers the goods! IMO compared to PDZ, this game feels like a better shooter for single player gamers. (To its credit, PDZ is a great cooperative FPS). And even if it has its framerate problems it does have some strong moments; it has some great, great GREAT cyborg design (some of the Strogg opposition looks amazing).