James Brown, The Singles Vol. 10 1975-1979 (Polydor/Hip-o Select)

The Godfather of Soul's penultimate complete singles compilation from Select. One more to follow! (Hip-o Select)

Carole King and James Taylor, Troubadours: The Rise of the Singer-Songwriter (Hear Music)

A new documentary on the California singer/songwriter scene of the 1970s, coupled with a bonus disc of some of the best songs from that period. (Amazon)

Various Artists, Icon (UMe)

Budget compilations from artists across the Universal spectrum, from Chuck Berry and Buddy Holly to War and The Four Tops. (Original post with Amazon links)

Metallica, Garage Inc. (Vinyl) (Warner Bros./Rhino)

A three or six-LP audiophile reissue of the band's covers compilation, featuring newly recorded takes on Metallica's favorite bands and previously released B-side covers from the '80s and '90s. (Official site)