@~~bkuehn1952 - 17 at Carnoustie is a great call! Off the tee you have an option to play safe and to the right, but it leaves you with a long second. Or, you can take your chances with the burn and the gorse, which come into play on both sides if you play to the left fairway option. Assuming you find the fairway, it leaves you with a much easier second. It's a really great hole - but it's a par 4. Definitely worth a mention; just on the wrong thread. That's all :)
I've always been partial to #15 at Cypress Point rather than #16. Not that I've played them. I'd be happy enough to simply lay eyes on them someday. If I'm lucky. The best I've seen and/or played is #17 at Sawgrass, and I felt fortunate enough to have done that twice. Hit the green on day 1, then got too aggressive on day 2. I went pin seeking at that front hole location. Found the bulkhead instead, then watched it bound 20 feet up in the air, only to hit the bulkhead one last time before going in the drink. But I still made bogey ....
#17 at Merion is fresh on my mind because of last year's US Open. #8 at Royal Troon in Scotland, otherwise known as "The Postage Stamp" probably deserves a mention.
Lastly, if throwing in the crowd at the 16th at TPC Scottsdale during the Waste Management Championship is fair game, I don't see how it doesn't make the list. There's no scene in golf quite like it.