:P I used to LOVE legos too. I even made a huuuuge backstory for most of the cooler lego guys.
I had 2 universes: My room, and the basement. in my room, 90% of the legos were monsters (random legos pieces put together in a way that looked like they were monsters. The story involved monster wars and fighting "shinra", then a dark wizard, and ended with a blast of "ultima" which turned the world into a desert) , and the basement which was mainly lego people (various stories, ranging from everyday life, to epic journeys). ...and the stories I made were so crappy... XD A good chunk of the characters were taken from FF7, and other games I played back then. Hell, I even have a "Ness" who looks NOTHING like Ness!
This one time I even made this whole world with various other "worlds" in it (with just 2 different sets), just so my friend and I could do a whole RPG thing through it. I had this city place, which had an ice cream joint, a rocket, and a bunch of guys from "Shinra" running it (but they had become good guys after a lot of different stories). Then I had a medieval segment, with this really crappy castle made of random parts, and with a working drawbridge and trapdoor to drop people into the dungeons. And lastly, a desert segment with some wacky platfomring thingy (the jungle segment was ONE TINY ROOM, so it's not worth yapping about).
:P What amazes me is that the WHOLE thing actually WORKED. It had a cohesive path to follow, with boss fights, hidden items, shops, and shortcuts all around. Plus, I had minimal other sets. My best firend was TONS of cool sets (Castles, underwater, jungle...I was a bit envious back then)
...since then I have since given up almost entirely on legos. All I really have are a few random characters (like the above-mentioned Ness) and this one space ship I modified from a larger one, which I'm pretty proud of. All the rest has gone to my little brother, who has some how gone from really crappy lego builder to grand master lego builder. Seriously, he's even better than I was! (although he doesn't make themed, or fantasy places). His main story is a war going on in a town, and the bad guys are actually secretly ruling th place. And it's not hard to see why...You have Darth Vader walking down the street (past tanks) to the local pub, which is full of guys with guns. XD
...:P I've actually thougt of doing one last adventure with him, but I just can't find the time, or inspiration.
...
...HOLY CRAP, that' a long post... 0_o sorry about the wall O text, but I couldn't help the Nostalgia...