I am an audiophile in many respects. I am pretty willing to throw down a fun chunk of change on speakers or headphones. I rip my mp3s at 192 kbps because I can't stand the sound of lower mp3 or AAC. I even have a degree in music, among other things. Naturally, then, when evaluating games, I give sound a good amount of attention.
Now, this is not the beginning of some rant about how game reviewers pay too much relative attention to graphics, but it is a plea for audio appreciation on some level. We are programmed by nature to rely more heavily on our vision than on our hearing, so obviously this sense is more fine-tuned, and we appreciate smooth graphics more than a good reverb effect. Sound, however, plays a much larger role in the emotional effect of a game than anything else, I believe. Whether this is a soundtrack that changes dynamically as the action gets more intense (try Shadow of the Colossus for a great example) or a great sound effect of a fist hitting a face (Fight Night), sounds add a whole lot to the experience.
I would like to see game design give a little more attention to audio in some areas. For example, the majority of FPS games released today still give you some visual indicator to tell you what side of your face was just blasted by a shotgun. I think consumers are ready to give that up for an audio cue, at least in non-portable games. Isn't it safe to assume that everyone is playing with Stereo? I can't imagine that there are a lot of TVs out there sporting Mono sound only. I have been happy to see sounds take a bigger role in stealth games, where no longer can you run around behind a guard's back, so long as he can't see you. I think it makes the experience more immersive.
Again, no huge complaints here. I just want to give game sound design the attention it deserves. Now that we're finally out of the days of MIDI, for the most part, the opportunities are endless.