When Windows 7 is released later this year, it'll have support for multi-touch screens. Since there really aren't any multi-touch screens out for desktop computers yet, this means you'll need to buy one if you want to be able to fiddle with the internet without a keyboard. And now Albatron is releasing their first 22-inch multi-touch LCD in March, letting you hop on the bandwagon early.
There aren't a ton of details available on this, but we do know that it'll support optical tech from the bezels rather than on the screen itself, resulting in higher image quality. The price, however, is still unknown.