iPad app to gesture control PC I am looking for an iPad app that allows me to map gestures to keyboard buttons and then pass these along to my PC. The idea being that I want to control Windows Media Center with gestures. So a swipe up would be the up arrow, something else the enter key, etc.

I am not interested in a full RDP client, I just want to send keypresses to my PC. 

My google-fu and appstore-fu are failing me.
Not sure whether they will do exactly what you want, but HippoRemote or Mobile Mouse should be worth a look, and both have (at least some) support for multi-touch trackpad and gestures. Both have Windows servers and should work on the iPad too.

HippoRemote actually has a dedicated profile for controlling Windows Media Centre, so unless you specifically want to use gestures, this might be the way to go.