The BlackBerry PlayBook makes a pretty mean presentation tool. It comes with software for viewing and editing Microsoft Office documents preinstalled, and has a built-in HDMI connector that can easily connect to any modern display or projector.
But if you really want to go pro, connect an HDMI cable and use the presenter mode icon on the right to lock the full-screen slideshow to the HDMI output and free yourself up to configure the tablet view however you like.
