I really only collect G.I.Joe for the most part now. Just before Christmas I picked up about 12 of the Transformers remakes when they went on sale for $20.00 each.
Back around 95 - 98 I collected a lot. All in boxes now in my or my parents attic and almost all is MOC:
Spawn including exclusives up to around wave 12 or so
Around 100 Star Wars figures from 95(?) up including the movie give away figure, mini ships and comic.
The New He Man figures until they became a pain to find.
Aliens (Missing ATAX and the aliens that came out with him but have the vehicles)
Crap load of McDonalds and Burger King Disney toys.
X-Men and X Force figures.
Avengers and Fantastic four figures.
WWF and WCW figures (these are loose)
12' G.I.Joe type figures but I can't remember the name of the line right now. Lots of WW2 style figures, good quality.
12' G.I.Joe figures.
Probably other stuff I'm forgetting now. This stuff use to cover all 4 walls in my bedroom when I lived in my parents basement. Then I bought a house and most of it got boxed up. Sheryl wants me to set up a table at one of the local toys shows but I'm not sure if I'm ready to watch this stuff go. Maybe when we have kids I'll be ready.