Preamble: Someone gave me Red House Painters' Songs for a Blue Guitar during a hard drive swap, but I haven't ever listened to it all the way through.
Anyway, I had my iTunes on shuffle while I was doing things around my apartment, and I heard this song come on that I assumed was some obscure Neil Young live jam-- acquired during a different hard drive exchange. :)
Turns out it was Red House Painters covering Paul McCartney's "Silly Love Songs." Duh!
At the end of the day, Mark Kozelek will probably be best remembered for his covers... AC/DC, Modest Mouse, and apparently also McCartney. Hearing this also reminded me of what might be my favorite cover of his. This is Red House Painters doing "I Am a Rock" by Simon & Garfunkel.