Professionally, stomping fools.
Academically: Endlessly shuffling arbitrary symbols around according to a set of rules, and attaching semantic meaning to the symbols that relates to stuff like waves, electric charge,intrinsic angular momentum and other ideas that describe the state of a physical system.
Operator algebra on infinite dimensional vector spaces.
Movie: eh, movies aint my thing.
food: IDGAFF TBPFH
2: My ballistic vest
3: lists of things I could never do without
4: The city
5: fourier transforms
6: Circulation, respiration, thermoregulation , membrane potentials.
Symmetries under gauge transformations.