Is it possible to force the next boot to be a recovery mode boot with a bluetooth keyboard? I wanted to test the new recovery mode in Lion and can't find a way to enter that mode using a bluetooth keyboard.

There are steps how to get a single user mode or safe boot using sudo nvram boot-args

I was wondering if anyone has uncovered how to get into recovery mode without having a hard wired USB keyboard. As described in the comments - this iMac is older than the ones that make bluetooth available at boot time which is why I'm looking to write something before the reboot progresses to a point where bluetooth is not available to override the default boot selection list.
This model seems to respect the option key only - so that will get me to the startup manager and I can select the Recovery HD. 

I have not had luck getting command R to work but it's clearly meant to work as well - perhaps that's for newer macs with better bluetooth hardware (or my mac is just cranky and not working as designed)