Just off the top of my head, from some more mainstream acts, the most recent albums from Radiohead, Opeth, Bon Iver, Beirut, TV on the Radio, Metronomy, Fleet Foxes, Guillemots, Antony & the Johnsons, Burial, Porcupine Tree, Pain of Salvation, **** Buttons, Animal Collective and Scott Walker have been like nothing I've ever heard before. Not to say every one of these albums is one that should go down in history with Sgt Peppers or Exile, but while listening to them I've had that thought "wow, this is new and interesting", which excites me.
And before anybody reels off names of artists these albums obviously draw influence from, pretty much everything that's ever been considered "original" still has oodles of past music flowing through it. To break new ground is to take a slightly new direction; it's not to avoid using anything that anybody has ever heard before. Otherwise we'd only have room for things like Metal Machine Music.
Well, I wouldn't describe the latest by Opeth and **** Buttons as being that great. Really enjoyed the last Crystal Castles though.
However, since you've admitted that none of these artists are doing anything potentially new or interesting [with the possible exception of Radiohead], hasn't this just turned into a list of "albums we like"?