Public Enemy - Fear of a Black Planet
Found this when I was dollar bin surfing at my local record store. The record is scratched to hell and there's no cover, but it was only a dollar.
Provocative Percussion Vol. 3
Also got this from the dollar bin because it was provocative and from 1961, which sparked my interest in the album. Haven't listened to it yet either.
Frank Zappa - Live at the Filmore East 1971
Awesome live album that I found for a good price, plus my record collection doesn't have a live album that I'm interested in yet, so it was a no brainer on this one.