Im thinking of making a SPN soundtrack cd and sending it out to anyone that wants a copy (free of course). If you have any suggestions for songs I can put on it let me know and let me know if you would like one :)

Wow, that's an ambitious project! I'd probably want one, thanks for the offer. (I'll get back to you about the details!)

One must-have I suggest is "Hair of the Dog" by Nazareth. It plays during the "Coming Soon" clip released before the show went on hiatus. It featured mostly Dean, and it was awesome!

I'm a HUGE Rush fan, and so far they've played only one of their songs, and a very early one at that, "Working Man". I'd love to see it included, but I'm likely in the minority, ;) Good Luck!! :D

Even though getting a soundtrack to me would pretty much be impossible (Europe is far...), I do love the idea.

The obvious:
Carry on my Wayward Son

Back in Black - AC/DC
Bad Moon Rising (You know, the one that plays at the end of season 1, with the car crash)
Heat of the Moment - Asia
Wanted Dead Or Alive - Bon Jovi
What A Wonderful World - Joey Ramone

These are all just songs I remember in particular from the show, and ones that I liked.
Can't Fight This Feeling is also possible. (The REO speedwagon song Dean sang in season 2)