Really? Not a single action figure you can remember fondly? Damn... I don't know if I should feel bad for you kids who missed out on imagination, and be annoyed you had so much more then me.
I mean, I got my Atari 2600 when I was pretty young, and my NES around seven, but I still had my toys. Oh... such fond memories. I lived in the magical time in the late 80s, early 90s when cartoons were made largely to be 30 minute long toy commercials. He-Man and the Masters of the Universe. Teenage Mutant NInja Turtles.
My favorite by far? Transformers. I looooooved my Transformer toys. Funny thing is, I didn't really get most of the original Transformer toys because, well... we were poor as dirt, and most of my toys were either given to us or Christmas/Birthday gifts. Most of the ones I had were from Beast Wars. Remember Beast Wars? Of course you guys don't, it was one of the first CG t.v. series from 1996. I loved that show, and I loved those toys. One of my favorites was one of the extremely rare 'Expensive' toys that I had. Don't even know how I got him, but he was awesome. It was the "Optimal Optimus" Optimus Primal toy, based on his appearance of the final season of the show, and it was... awesome!
Look at this figgin' thing! It had four modes! It was huge! Oh, I could just start at this thing and let my imagination run wild.
*sigh*... I miss my toys...