Air Mouse Pro's advanced remote locks into your laptop with a Wi-Fi network to do everything on your computer that you would with a keyboard and mouse. That goes for playing music and TV to typing and launching apps. You'll first need to download the Air Mouse server for Mac or Windows.
Mac owners with fewer requirements can download Keynote Remote (iTunes link; $0.99) to advance presentations and review notes created in Keynote '09.
Photo credit: Air Mouse