As part of Nick DiFonzo's enormous library of novelty and just plain unfortunate records at BizarreRecords.com, he's assembled a gallery of branded album covers from the likes of Shakey's Pizza to Owens Yacht dealers. If you still think it's strange when Coca-Cola or Procter & Gamble release music under their own name, check out the cover for Gold Bond's "Sound Off... Softly" album promoting their -- ostensibly sound-dampening -- ceiling tiles. Or "Music to Recline By," sponsored by furniture maker Berkline and featuring Richard Maltby and His Orchestra. A few of them even have audio samples.
If this kind of stuff really get you juiced up, just start googling "RCA Custom Records," and you'll find untold wonders.