Heh, HL2 may not have been quite what everyone was expecting, but it was a damn sight better than Doom 3, which was frankly shockingly bad.
UT: How the hell did you have 5-minute loading times??

Are you running a 486 or something? I mean, I know my 'puter is pretty powerful (A64 3500, X800, etc), but I my loading times were never more than about 5-10 seconds with full detail on, so unless you were running it on way-too-high settings, you should get something comparable...
As for Area 51, I've seen mixed reviews for it. I'm probably not going to get it, just because I don't have enough time to play games much at the moment. Maybe over the summer....
A fun little shooter you should try out is Painkiller. It's about a year old now, but it's great fun. Similar to Serious Sam, in a sidestep-shoot-sidestep kind of way, with hordes of baddies and HUGE bosses to kill. Some spectacular levels as well (the Monastery level towards the end is very cool), and some groovy weapons like a stake gun and a shuriken launcher...