I agree with Dana on Unholy Wick, and indeed Grey Dick gives it a star. I keep meaning to go up there again and do the 5.9 variation (Bow Tie Ceiling), which I recall as looking nice.
I think I like Diana better though.
A nice combination of pitches is to do Erect Direction P1 to CCK direct (which I think is one of the all-time Gunks classics at 5.9-), walk over to The Last Will be First rappel, and then do the nearby top pitches from the GT ledge: Diana, Unholy Wick, Jim's Gem, and Modern Times. (One could, of course, go further North on the GT ledge too...)