The idea came when I was surfing through old ESPN articles and came across their list of songs used by major leaguers as entry/batting music:
http://sports.espn.go.com/espn/page3/story?page=atbatsongs/index

Just for fun, let's hear it: you're a closer or reliever.  What shitty 80s headbanger do you enter to?  Only rule is that it HAS to be an 70s-80s era metal headbanger.  What song do you want blaring out of the stadium as you sprint from the bullpen?  Which metal ballad is going to be psyching out your oppponent?

I'm going with Van Halen's Panama.  Why?  Because it's so horrendously bad, yet instantly identifiable and faux-macho.  Certainly beats Donnelly's personal choice.