I live in Melbourne, Australia and my fav teams are:
Australian Rules Football - Richmond (The Tigers)
One of my favorite Tiger players - Mark Coughlan.
Cricket - Australia (naturally, the current world champs at both forms of the game) and Victoria at the domestic level
NFL - Dallas Cowboys
College Football - decided to follow it last year and chose Nebraska for some unknown reason.
NBA - Dallas Mavericks
MLB - don't followit closely but if pressed I would say the Atlanta Braves
EPL - Tottenham Hotspur and Leeds United (because Harry Kewell and Mark Viduka play for them)