Pope Saint Hilarus ("also spelled HILARIUS" -- no I am not kidding) has the best name.
Over at Kimsquit's blog, he posted a Name-the-Next-Pope contest (back on April 6th). I'm now rooting for Pope Urban IX which has a nice post-modern vibe while being really damned traditional.
All about Urban (which means "kind" in Latin):
The first Urban reigned 222-230; the most recent (Urban VII) from 1623-1644. Urbans II and V now carry the title "Blessed" (indicating their Beatification). Urban VI was elected amongst chaos and "his whole reign was a series of misadventures" but he was luckier than Urban VII who died 12 days after his election which meant he missed his own Papal coronation! Urban VIII was quite controversial. He used nepotism to install several nephews as Cardinals, spent heaps of money on armaments, and served through the Thirty Years War. On the other hand, in 1627 he founded the Collegium Urbanum, whose object was the training of missionaries for foreign countries (whether you see this as good or bad likely depends on whether or not you are Catholic) and the library that one of his nephews created was eventually absorbed into the Vatican Library in 1902.
OK, so maybe Urban isn't the best choice, but I'm still rooting for it.