Yelawolf's Stereo mixtape. Whatever you think of the lyrics, what his producer did with different classic rock samples was pretty dope. I also like Rick Rubin's use of "Big Beat" by Billy Squier for Jay-Z's "99 Problems".
The number #1 use of a rock sample I never get tired of, and far as I know been used once is "Angel Of Death" by Slayer. Def Jam label mates did it justice in "She Watch Channel Zero". Who knew Black Powerman Chuck D dug Slayer? I'm sure Rick Rubin had a part in gettin' Slayer to let them use it.