Hmm, difficult call really, way too many to pick just one.
Favourite "psych-up" song in the dressing room prior to kick-off: Rollin` by Limp Bizkit
Favourite get-drunk-to pub song- Mustang Sally by The Commitments
Other notable mentions: American Woman by Lenny Kravitz, Black Magic Woman by the master himself, Jimi Hendrix, Self-esteem by The Offspring, Smells like teen spirit by Nirvana, How you remind me by Nickelback, The sweetest thing by U2, the list is endless........