So I was thinking about some of the older LEGO themes that I grew up with or that I just generally enjoy. Obviously Bionicle/Hero Factory takes the top spot, but then I got into more specifics that didn't rely on constraction (someone please tell me if I'm using that correctly), eliminating Bionicle, Hero Factory, Star Wars build-able figures, and other sets like that from my choices. I would probably have to say that my favorite themes were/are (not necessarily in this order) Galaxy Squad, Alien Conquest, Marvel Super Heroes, the original Lego Racers, Aqua Raiders, and Exo-Force.
Now I'm asking all of you: what was/is your favorite non-constraction (system based) LEGO them(s)???