I guess I can take a stab at the top-ten list, though there's no way I can keep it to ten. these aren't even my favorite however-many songs, just my favorite song or two or three by I guess nine artists/bands.
so, in no order at all other than the first song:
Led Zeppelin: "Over the Hills and Far Away", "When the Levee Breaks"
Nomeansno: sigh waaaay too many to list, but I'll go with "Happy Bridge" + "Kill Everyone Now" (essentially one song) and the Live & Cuddly version of "Two Lips, Two Lungs, and One Tongue" + "Rags and Bones"
Beats Antique: "Runaway", "Extra Extra", "Oriental Uno"
Rush: "La Villa Strangiato", "The Necromancer"
Rezzonator: "Perception", "Inversion"
René van der Wouden: "Numerus Fixus Part 1" (YouTube version)
Big Sugar: "Let It Ride" (cover of the BTO song)
Hocus Pocus: "Focus"
Morphine: "Test-Tube Baby/Shoot'm Down", "Radar"
there are even bands that I like more than some of these overall but whose songs I can't quite put on the list, like They Might Be Giants and Yes.