While I could probably do without the cost of a titanium frame, I bet the ride on a 36er would be super duper smooth. (Anyone ever make a bamboo 36er?)
This article discusses the challenge in designing a 36er, mostly getting the rake, head angle and trail correct:
Black Sheep Bikes ZAMer 36er Mountain Bike Review | Mountain bike product reviews, bike builds, trail reviews, forum, and tips – MTOBikes.com.
The forum post below is a great discussion on other 36ers and some wheelie pics!