I'm a little hazy on genres, but here goes...I'm gonna go for artists, not specific songs....
Folk-esque (?) music: Gordon Lightfoot, Burton Cummings, Joni Mitchell, Great Big Sea
Sometimes classical-sounding prog rock: Genesis (huge range though), Le Orme, Martin Orford (hard to find), ELP, the Strawbs, IQ (probably my favourite band)
Random favourites, mostly rock-ish, mostly well-known, I think: Metallica, Andy McKee (neat pure guitar stuff), Beatles, Billy Joel, CCR, Deep Purple, Eric Clapton, Pink Floyd, RHCP, Santana, Steve Hackett, Sublime, Rush, Yes, Anathema
I

led zeppelin, too.