If you're skeptical about Microsoft's Honeycomb menu, check out this article by istartedsomething. Some people are confused about why Microsoft is going with the honeycomb menu and this article sets the record straight.

"Contrary to popular belief, the tip of human fingers is not squared, but in fact circle-shaped when depressed against a hard surface like a touchscreen. When you’re space-constrained as you are in something like the applications menu - where there’s a fine balance between how many icons can be displayed at one time and how easy it is to hit the icons, large circular hitareas makes it easier for users to touch the desired icons and avoid accidentally hitting nearby icons."