The XFree86 Synaptics touchpad driver is the coolest thing I’ve seen in ages. It changes the action of the touchpad on a laptop so that dragging a finger down the right-hand edge works like a mousewheel, a two-finger tap works as the middle button, tapping in the corners works as a middle or a right-click, and loads of other cool stuff. Even better, you can adjust the sensitivity of the pad to clicks; no more does lghtly brushing the pad by accident act as a mouse click! Have Windows people had this for ages and I just didn’t know about it? It’s a shame that Ubuntu doesn’t install it by default; it’s in Debian (and Ubuntu) but it requires hand-hacking the XF86Config file.