Soccer:
MLS: Chicago Fire
Scotland: Glasgow Rangers
MISL: Baltimore Blast
FIFA: I like what DSStan said! But I'll say:
US Mens National Team
Brasilian National Team
Anybody playing against France
Football:
Pittsburgh Steelers!
College Football
Pitt
Whosever playing against Penn State
Hockey:
Charlestown Chiefs
NBA:
Whoever Phil Jackson is coaching!
College Basketball:
Pitt
Concordia University
NASCAR:
Darryl Waltrip
Baseball:
Far from my favorite sport, but I like the minor league Washington Wildthings, and Mr. honeychile loves the Chicago White Sox (and is in a better mood when they win!)