To steal a similar idea from mvhsbball (something like that)...
If you could inflict years of torment on a SINGLE team from every sport, what team would that be?
NFL- Carolina Panthers
College Bball: UNC
College Football: University of Florida
NBA: LA Lakers
NHL: New Jersey Devils. Not really sure why, though...
And my #1 most hated team overall....UNC. (I'm sure Duke will be on many of your lists :) )