LogMeIn Ignition 1.1.138
the author of this app says:
One click on your iPhone or iPad lets you remotely access one or more computers anywhere, anytime. So you never have to worry about leaving anything behind. Directly control your Mac or PC, all your apps and all your files like that important presentation for your boss or that important photo album for your mom with a simple touch.
Compatible with iPhone, iPod touch, and iPad. Requires iOS 3.0 or later.