Generation 1: Hell yeah. Originals were ftw. Rahi were cool but I only bought those punching green and blue ones.
Generation 2: Bohrok things. They were cool. I only bought one.
Generation 3: New toa and new bohrok. I bought all the new toas and bohroks, except for the stone toa.
Generation 4: Holy stuff another supercool toa, bad guy, and a MOVIE. Nerdgasm right there.
Generation 5: New ugly colors, new toa and another movie. Pretty okay.
Generation 6: Same toa, but now they're mutated by spiders. I bought all those new playsets :D The big one with the mask for a gate was cool.
Generation 7: Ok, back to reality. AAR endorsement introduced and secondary storyline from it. Oh, and the first actual good game.
Generation 8: Underwater! It's pretty cool but not as cool as usual. Loved those dart shooters.
Generation 9: In the sky, It's alright. Some of the sets look cool.
Generation 10: In the swamp. Meh. I only bought one. They aren't the greatest, but its decent. Finally finish the quest.
Generation 11: Bad guy still at large, sets look lame now. Totally different story, glatorian stuff comes in and no one knows wtf is going on. Only the ice dude looked cool.
Generation 12: I forget, I saw the new sets on brickfair or w/e its called.
Started going downhill after Piraka and Inika. That was cool stuff.
I have a bunch of MOCs that I made out of Bionicles and tons of pieces. Pics later.