I love this topic.
Well, I guess you can check my profile where I list my favorite hobbies. But I'll make a post of them too.
Like HPCrazy, Amusement parks and roller coasters are up there. I don't really have them numbered, as my hobbies find equal time in my life. : P
Another one of my hobbies is fishing, which I've mentioned before. I absolutely love fishing. Don't ask why, but I just grew up in a fishing area. I enjoy catching any type of fish.
I also like things that have to do with industry. I've been around and worked around hydraulics and pumps and such, and I enjoy seeing how things work. That leads me to my interest in construction and engineering, where I also like architecture and making designs and diagrams like that.
I also have a love for photography. I love my camera too.
Just capturing moments in time and photographing memories. Also taking pictures of things for later reference and stuff. Film making, like stop motion I enjoy too.
I have a love for football - being my favorite sport, hiking and walking.
Technology-wise, I like computers and their components, software, and just trying different things out with programs etc..
Oh, and I also enjoy model building and constructing things.