1. The Little Brown Jug is the trophy that goes back and forth between the two schools depending on which one wins the game. It was originally purchased as a water jug for the Michigan team on an away game to Minnesota in 1903, it was left behind after the game (a 6-6 tie). The Daily Gopher has an excellent roundup of the story (warning: Minnesota point of view) quoting from several Michigan football blogs.
2. Michigan shares a border with Minnesota along Lake Superior, and there is public transportation by ferry from Houghton, Michigan to Grand Portage, Minnesota via a stop at the Isle Royale National Park.
3. Ann Arbor, MI was the site of GopherCon '92, a 50 person workshop for developers and users of the Gopher information system, a pioneering Internet publishing system that was for some brief furry moment the hot new thing on MTV and bigger than that super-complicated World Wide Web hypertext thing. Prentiss Riddle wrote up the trip report for it, and here's his writeup on my presentation at the time:
RELATED TECHNOLOGIES: Ed Vielmetti of CICnet gave a talk on "what we would be gathering to discuss if UMinn had never developed Gopher", meaning primarily World-Wide Web (WWW). WWW was developed for the high-energy physics community and serves as a model of what Gopher could do if a discipline-oriented virtual community invested in it
heavily. WWW is based on SGML (Standard General Markup Language"), an ISO standard for marking up text which WWW uses to implement hypertext. SGML is a bear and it is a significant investment of effort to properly add a document to WWW, but the result is quite powerful (for instance, WWW handles footnotes in hypertext).
The Internet periodically notices that Gopher is not dead; here are a survey of the current Gopher infrastructure from Jason Kottke, some April development from George Hotelling, and a manifesto from Bjorn Karger.