I agree most of Elvis' popular 50's stuff is unlistenable today. But check out his religious efforts, and his later stuff. The man could really, really sing and entertain a crowd.
Without Elvis soul and R&B would have never gone mainstream. Basically he did for Rock and Roll what Madonna did for cheap Italian sluts.
Your opinion doesn't count because I saw you wearing a Kenny G: Smooth Rockin' The Stage Live '07 Tour t-shirt at the tailgate.