A few months ago I wrote "Stock Android Isn't Perfect," an article where I turned my usual harsh UX critique on stock Android, instead of just picking on TouchWiz and Sense all the time in my reviews. The article went over pretty well, and even got a few responses from Googlers! I didn't cover everything that was wrong with Android, though, and there have been a bunch of updates since the original article, so it's about time I wrote a sequel.
The virtual looping feature enables scrolling past the leftmost or rightmost homescreens with a quick bounce-to-the-opposite-end effect. While Fede implemented it this way instead of an endless scroll for technical reasons, I think it's visually a lot better and clearer, as you will still know when you've reached the end and won't feel lost in your own homescreen forest.