Yep, I'm on COD:UO for a couple hours every evening. I started on MOH:AA, and got the first expansion to that, but was disappointed. They didn't add a few things the way I would have liked.
Then found Call of Duty and played the demo. I was thinking 'HELL YES, I'm getting this game for sure!!'. Got it when it came out. Played the SHYEEEEIT out of it. Then the Expansion. I didn't even know it was out (too busy PWNing in multiplayer). Found out the expansion was out, got it, and was again like HELL YES!
I get on multiplayer like I said, a couple hours every evening, if I'm not busy with other chores... but then, I live alone, so screw the chores! Like AR-15Fan said, it started as a good infantry game, and added to it. It is now what BF1942 TRIED to be. I love the new weapons they added, especially the G43 and SVT40. I love playing with the rifles. It's just satisfying to pick someone off from a distance. I like the deployable machineguns, but they are a bit of a PITA. You can't rest them on a lot of objects, such as boxes and such... and you're practically retarded for a second or two when you pick the bastard up and try to run. I think you should also be able to reload them while not deployed.
Mostly I'm in TDM, CTF or DOM servers... I used to get in the Dirty South server a lot. It was always packed before UO.. now it's almost abandoned most of the time. I'll hit the 517th server, but it gets really laggy/stuttery.
If you see an ass-kicking player named Fray Adjacent, that's me. I'll be the one PWNing you. (I'm a decent player... not always top score, but usually pretty close... )