I was inspired by these threads here:
http://realwrestlecrap.proboards.com/index.cgi?board=ot2010&action =print&thread=300591

http://www.stevehoffman.tv/forums/archive/index.php/t-80138.html

Examples off the top of my head:
*"Dirty Diana" by Michael Jackson

*"Black Cat" by Janet Jackson

*"Fighter" by Christina Aguilera

*"Free Your Mind" by En Vogue

*"Crazy Horses" by the Osmonds

*"Zombie" by the Cranberries

*"War Machine" by KISS (it was co-written by Bryan Adams, so in a way, it's an uncharacteristically "bad ass song" for him)

*"Danger Zone" by Kenny Loggins

The opposite side of the coin:
http://www.cracked.com/article_15127_when-badasses-go-soft-10-weakest- songs-by-badass-bands.html

http://www.cracked.com/article_15127_when-badasses-go-soft-10-weakest- songs-by-badass-bands_p2.html

Here's a good one...

"Helter Skelter" by The Beatles