All right, I'll come clean, but I won't apologize. If I listened to folk all the time, I might run the risk of getting burned out on it, and that would be a bad thing. I'm a pretty simple person but I've got a few more moods than just "folk".

I've still got a few contradance, Chieftains, and folk-revival [pop-folk] albums, and the Golden Ring/New Golden Ring set. Other than that, mixed in with my growing collection of blues, Cajun, roots country, and old-time fiddle you'll find:

Pop & rock
Buddy Holly & the Crickets
Everly Brothers (four CD's worth)
Del Shannon
Colin Gilmore: Jimmie Dale's son and a major Buddy Holly obsessor. I think this is what Buddy would have sounded like had he been a Gen X-er.
Ricky Nelson
the Band
Allman Brothers
Creedence Clearwater Revival
the Eagles
Battlefield Band: Folk and rock!
Little Richard
Fats Domino
and I once owned an entire cassette tape of the Shirelles. Yikes.

Nashville country
Randy Travis (sorry, but the man does great country gospel)

"Americana", whatever that means
Gillian Welch
Cowboy Junkies: Good stuff for depressed college students.
Son Volt: Also good stuff for depressed college students.
Skid Mountain Boys: [See above]
Old Crow Medicine Show (well, one CD. I don't actually like them that much(
the Devil Makes Three: Old-time noir.

Swing/Jazz
Hot Club of Cow Town
Scott Biram: blues/country/punk amalgam. When he's in the mood, he does this Woody Guthrie-channeling thing that is almost scary. I listened to him a lot when I hated my job.
the Weary Boys: loud, sloppy, retro-country.
Wayne Hancock: the master of rockabilly revival. I mostly go to watch his lead guitarist, Eddie Biebel, but the whole show is good.

Texas & alt-country
Townes Van Zandt
Steve Earle
Robert Earl Keen
Lyle Lovett (as close as I get to 'easy listening')
Lucinda Williams