Aaron does a walkthrough of Ice Cream Sandwich on the international HTC Sensation XL.  New features include Face Unlock, the Recent Apps menu, a new menu structure, and revamped fonts.  It's a nice upgrade, and overall, Sense 3.6 is a nice improvement over previous builds of the popular UI (though not quite as good as Sense 4, which is what's offered on the HTC One line of devices).