My old Alma Mater! Gamewise? There is a store on the east side of the river which is OK but used to be better.
Museums: Gustavianum is pretty good, as is the Museum of Evolution. Uppsala is great for "fika", the chimney sweepers slang word for the ubiquitous break for coffee, cinnamon buns and biscuits. Try Guntherska, Ofvandahls, Cafe Linne or Landings.