If you normally use tapping with touchpads, you should note that the touchpad for the MacBook Pro allows right clicking by tapping with two fingers. The touchpad can also detect three-finger taps, but for some reason, OS X ignores them; Ubuntu, on the other hand, allows full use of the touchpad as a three-button mouse, though the driver is currently rather poor. I would actually almost prefer that the laptop not have the one actual mouse button that it does - it generally just gets in the way and generates spurious clicks when there is the slightest hint of shear force on the frame.