Originality can't trump playability. If the originality is expressed in a way that makes the course just feel goofy, then I might just play it once for grins, but wouldn't want to make it a steady diet. On a few occasions, though, I've found that holes that seemed forced from a design standpoint were really a result of some situation that I, as a player, couldn't see - like having to deal with a funky property line or protected wetland or some other issue that wasn't immediately apparent. In other words, sometimes creativity or originality are forced on an architect who is working with a difficult property. Fossil Trace is, I believe, a great example of a course being built through a maze of property issues, both the difficulty of the land itself and the political/environmental landscape that had to be dealt with.
But all that wouldn't matter if the course wasn't a good one to play, and FT makes the cut on that account.
Tim, can you think of a course you've played where the zeal for originality was just "too much?"