I really wish something like this were available on Linux. I moved an old Mac to Linux (no OS updates from Apple), and the biggest things I miss are good support for multitouch gestures with Apple Magic Trackpad and an app like BetterTouchTool that helps make the standard experience even better. I bought BetterTouchTool (when it went to a paid app from donationware), and I would buy something like it if it were available on Linux. I spent quite sometime researching for solutions and trying some stuff, but right now the experience of using the Magic Trackpad on Linux is just the same as using a mouse.
