Even though I'm not a big Eminem fan, that song does pump you up - I'll give you that.

"I Don't Wanna Grow Up"-Tom Waits
"Someday Baby"-Bob Dylan
"Lawyers, Guns and Money"-Warren Zevon
"Tonight, Tonight"-Smashing Pumpkins
"Blue Sky" Patty Griffin

Those are just five that pop into my head right this second.

"Close to me" - The Cure

Always this one:

Here (In Your Arms) - Hellogoodbye

Thank U by Alanis Morissette
also the cover by Blackfield is very good

"Here Comes the Sun" - The Beatles