Someone in the Apple Intel Ubuntu Support Forum has made the needed changes to the synaptics driver to enable the “touch two fingers to the touchpad and click for right-click” type of functionality as is found in Apple’s OSX. This was a highly sought-after feature that the synaptics driver was missing. Work is still being done on the driver, but it looks very promising. Check it out and contribute if you like:

http://ubuntuforums.org/showthread.php?t=626112