I have the ati all in wonder 8500DV that comes with an RF remote (so it works through walls and from very far away). It also works as a wireless mouse. The remote can be purchsed by itself for $50 and works with windows media player and other programs with remote support (including all ATI programs obviously).
I'll second that remote, the RF is awesome, I can control my pc in the den from the living room (why? well to watch movies off the pc in the HT of course).
I use a pronto for everything else, so i got an IR keyboard (popular IRman) and taught to pronto to operate it. The pronto simply shoots IR at the sensor for the keyboard, and the programs see it as if it were keystrokes.
It isn't RF- but that doesn't seem to matter in my config- and I still have one remote for everything.