Wraparound is an interesting free utility for those with multiple displays, or very large displays. I sometimes have a 4-screen setup at work and it can take some time to move the mouse from the far left to the far right. With Wraparound, you just keep going left and, well, you guessed it.
Mmm… Now I’m dreaming of a desk which surrounds me completely, with 360 degrees of screens, and I could sit in a hole in the middle, a bit like a model railway enthusiast…. Then I’d really want this! Of course, I’d also really want a wireless mouse…