From Boing Boing:
Lileks examines currency Jame Lileks comments on paper currency from around the world. As Coop notes, It's "jawdroppingly weird old ephemera, pleasantly seasoned with acerbic comments."
Any note that shows Johnny Cash as a jet pilot is a dollar bill I'd be proud to spend.
Of course, that's not really the Man in Black, but it has his noble cast and sorrowful mouth. Also, his left eye appears to be scarred shut, but obviously that's not the case if he's a pilot. If there had been a military coup in the US in the 60s, this is what our money would have looked like. Link