Alright, I've been trainz-less for three months, but i can do this...
USLW: the S1 2-8-2 (3254) is back up
there's a couple on TPR
sirgibby's train zone
san juan trainz
carson car shops: if you're in to the 1880's
east coast trainz had some cool 2-6-0s, but they've vanished
lilb's AC-12 off his forum (+the upcoming GS-4 Daylight)
that's about it, i think