I usually don't much like the hard side of half par holes in and of themselves. What I like is a juxtaposition of hard four an easy five. Its cool when you get this back to back or very close together (which would often mean they head in opposite directions). In a way a player can look at these two, if played consecutively, as one long hole with an overall goal between them - say a 4 on the par 5 and 5 on the par 4. I don't see this configuration often, but I reckon its a good way to eat up a chunk of land that is not terribly inspiring.
All this said, I think Deal's 3rd is a terrific hard side half par two-shotter and that is often with not much more than a 7 or 8 iron if you hit a good drive.
Another terrific example is Burnham's 18th. Its a tough hole for many to reach in two so getting position on the second if one can't reach (or if its unlikely one will be successful even if they can reach) is paramount.
And just for young Scott, I have to mention St Enodoc's 10th. A ball buster par 4 but, still so good because of its uniqueness.
Ciao