Monorail and Technic, Castle, Pirates and Space, maybe even some Trains. Quite varied really, but that's LEGO for you.
My Brickshelf folder contains more stuff than I'll ever get around to describing here. Shame really, but I'd rather build it than write about it. However, I do a lot of building in LDraw/MLCAD so you will find a lot of plans for the stuff I build there (its a side-effect of commuting by train with a laptop - virtual bricks are a lot easier to carry than real ones!)