Welcome back
The ones I'd suggest are in alphabetical order:
General Tools:
JSGME
SH3 Commander
SH3Gen
SH3 Weather
SuperMods: (each installed seperately)
GW 1.1a (Soon to be GWX)
NYGM 2.2
U-Boot War Ace 1.9x
Sober has some pretty neat graphical add on's. Tikigod has a bunch of them too (yay pinups!)
One of the best places to find all of this would be at:
http://u-boot.realsimulation.com/