Snap! Nice one Blaze
Well, I'll try and rattle off some figures (to bolster my own ranks I'll add some others if I start to run out):
G1:
-Optimus Prime
-Kup
-Metroplex
-knock off Prtoectobots
-knock off mix of Stunticons, Terrorcons and Technobots (yeah, wierd but they were so cheap)
-original Groove and Firefly
-Bludgeon's Pretender shell (though where Buldgeon is who knows?)
-Ultra Magnus rerelease
G2:
-Rotor Storm (minus a gun)
-Dreadwing (minus some missles)
Heavy Hitters:
-aforementioned Metroplex
-Energon Omega Supreme
-Cybertron Metroplex
-Armada Unicron
-Cybertron Primus
-Star Wars Vader/Death Star
Alternators:
-Mirage
-Hound
-Silverstreak
-Tracks
-Skidz
-Jazz (never going to call him Meister I don't care what the packaging says)
-Autorooper (is this an alternator?)
-Optimus Prime
Binaltech:
-Grimlock
Masterpiece:
-Optimus
-Magnus
-Megs
-Screamer
-Screamer in original colours
A whole bunch of armada/energon/cybertron guys (but I'll put them up at a later date).
Now the biggest, heaviest hitter of them all:
-movie maniacs 18" Ash figure
That's right. No other figure can stand up to the chainsaw handed, shotgun wielding, dopey antics of Ash from the Evil Dead series. "Groovy."

It's ok sir. I'll be fine...
Just listen to your commander, bonebrain!
Yes dear...