Supernaturals? Hell yeah. I had a few of the ghosts and Burnheart -- who basically managed to fight every other 5"-ish action figure I owned at some point or another. Even after I lost his chest cover.
GUTS? Also hell yeah. I had TONS of these guys. It was everything I liked about green army men, but better. I think there's still some of these guys buried in the back yard of my childhood home. As a surprise to exactly no one, my favorites were the black ninja-looking ones. It was a weirdly diverse line.
MEGAFORCE? You bet your ass. LOVED those things. I could spend a whole day with jets, helos, and tanks chasing each other around.
Z-Bots? Oooh yeah. I had loads and loads of these as well, including a bunch of the ones you could only get from fast food. I think it was McDonalds, but I could be wrong about that. I still remember the dude with the horns and a sword, that kind of looked like a Megazord. I loved that guy. And cannon-hand guy that came with the little tank. Great line. So creative. We don't get enough shit like this anymore.
Army Ants? Yup. Absolutely had several sets of these in blue and red. One of them had a sword, which is basically all you need to sell me on a toyline. Definitely lost most of these in the back yard.
Bone Age? Okay, I actually only had like two of these. But they were cool as fuck. I remember finding a tiny sword and giving it to one of the cavemen guys so I basically had a tiny He-Man for my undead dinosaurs to fight.
Robin Hood: Prince of Thieves? Yes sir. Loved the movie as a kid and immediately bought the toys because they were cool and had swords. Robin and the Sheriff had so many sword-fights across my house. I didn't own many of these, though. For whatever reason I remember them not being easy to find, and I was buying so many different toylines at the time; this line just didn't rank high enough for a 'collect them all' attitude. But I loved what I had.
Rock Lords? I had two...? Yeah, two. I did not like them.
Stone Protectors? YUP! Swords!
Food Fighters was a weird one for me because I remember having maybe four or five of them, but I don't have any distinct memories of playing with them. It was more like 'this is hilarious and neat!' so I asked for them and then didn't know what the hell to do with them because I wasn't really the kind of kid that did 'silly' play. If that makes sense.
Captain Power is something I -STILL- want modern toys for. I was really hoping when Fresh Monkey was doing all the 4" stuff that they'd do it, because I want his ship. I loved my Captain Power figure as a kid, and his ship, which I also had, was always one of my favorite spaceship designs.
I had two Spiral Zone figures and a vehicle. I remember thinking they were super weird because of all the fabric elements and stuff, so I never enjoyed using them -with- anything else. Which meant it was one good guy and one bad guy chasing each other around until I started losing parts and, consequently, interest.
When I'm home from work I gotta sit down and think about all the other weird little smaller lines I collected as a kid, because there was a LOT.