Great collection Kentox; I especially love the Kenner Alien and the Kaiju. I've never known too much about what to look for, but I love the sculpts and colors of those toys.
And sweet matchbox collection Yodasan! Again something I'm not knowledgeable about, but its easy to appreciate the aesthetic of them. And really I think that's one of the coolest things about older toys is that they aesthetics are very different from generation to generation.
I found another picture in photobucket of some of my vintage stuff... just not the current display:
Mattel Shogun Warrior- Gaiking
Transformers: Jetfire
Voltron II (6-armed guy next to Gaiking)
Konky from Pee-Wee's Playhouse
Set of US Secret Wars figures... (didn't have Hobgoblin yet when this was taken)