Back when I used my Nokia N82 I used anyremote to remote control XBMC on my computer via bluetooth. With the N900, there doesn't seem to be any way to do this, and I really don't think I should have to resort to using a VNC to do simple tasks.
Maybe someone that knows how can port the anyremote client to maemo?

If there are other simple ways to use the n900 as a remote control for XBMC, I'm all ears