You have 30 programs open. You hit Alt-Tab, and you’re selecting program #2, and you want to select program #15. Instead of holding down Alt and hitting Tab 13 times, TaskSwitchXP lets you simply mouse over the icon you want. Release Alt, and it opens the app you want. Being able to simply mouse over everything to open it is beautiful, instead of alt-tabbing around blindly. It becomes second nature VERY quickly.
It’s a *complete* replacement for Windows’ Alt-Tab. It’s very easy to turn off and uninstall if you don’t want to use it anymore, however. 🙂
It’s decently customizable and it also provides full-sized window previews of all your windows, which you can selectively turn off if you choose. I wish I could disable it entirely, but hey, I’ll take what I can get.