Every class looks different, and you can see interesting facial details if you get close enough. Unfortunately, TFC lacks a soundtrack. This isn't too much of a problem because you can run an audio CD while playing. I have surround sound, and I gotta tell you, the effects are astounding. From every grunt to every gun shot and from every step to every voice, the effects are loud an clear.
Footsteps are more audible on certain kinds of floors than others, which is a nice touch of realism.
Ahhhh, Team Fortress. This is what your main TF experience will usually consist of, along with a few other gameplay variations thrown in for good measure. Completing your goal in a mannerly fasion will take a fair amount of team-work, communication, and planning. That is, after all, what this game is about, team-work. With nine different player classes to choose from, forming a well balanced team is a goal in itself.