physics...I remember when i was in school we did this unit on electricity and made us do experiments with cables and batteries and i had fun! I learned how to fix sockets and plugs, which has been quite useful.
Well, my work is in a sub-branch of physics, namely electronics. More on an engineering level than pure science. The lab I work for is involved in physical oceanography, marine environmental sciences, and hydrodynamics, so I have picked up a basic grasp of the concepts involved in those fields by helping design instrumentation for field use. As far as non work-related interests, chemistry and pharmacology, and ethnobotany are very interesting subjects to me. My interest in technology also extends to my hobbies, which include ham radio, restoring vintage electronics, and collecting vacuum tubes. I am also strongly interested in the history of engineering. In particular the US space program and the Manhattan Project.
Physics (optics), its what i do. I also enjoy quantum physics and hope to move into that field eventually. I also do some chemistry but more as a means to an end. I also like microelectronics and philosophy of science.
I like biology, especially related to the human body. I also like mild astronomy, the kind you learn in elementary and junior high school. When you start getting into quasars and nebulae and all that complicated stuff... *shrugs and shakes head* You could say I like to keep my body here on Earth and know what I'm doing with it, but I wish I was in space, lol!
Mine is Meteorology which is my main interest. I am also into Geology, a bit of medicine and nutrition.
I'd have to throw in with Kilgore Trout (in all of his Vonnegutaliciousness) on Theoretical Physics / Astronomy... Particular some of the stuff they're doing with Superstring and 'resonance' models of the Atom (taking the 'particle' out of 'wave-particle' models of atomic structure).
I'm a biologist, so I guess I'll go with that. Physics, chemistry, and astronomy are all very interesting too.
I'm really interested in Chemistry... organic chem, nuclear chem, bio-chem, neuro chem... its all really facinating. I also really like cosmology, physics, quantum physics (even though I dunno what the hell I'm talking about. ) I dig genetics, biology, and ecology too. As soon as I can hoar my way into college, I'm going for chemistry though.
evolution. because it's interesting, but also it's funny how they have to teach it incredibly carefully as not to affend anybody who takes the bible literally.