Havasupai's on the bucket list. I know a couple that did it a few years ago. The wife, pretty much a non-hiker, got pissed at hubby's relentless pace in the heat coming back up and just sat down, refusing to budge until a chopper lifted her out. She claimed heat exhaustion at the time, but later admitted it was pure orneriness at not wanting to be doing the trip at all, combined with hubby's lack of sympathy.
She did say it was one of the most beautiful places she had ever been to.
