One of my friends asked what the 'Windows button' does on my steering wheel. So I showed them by pressing it and saying "next song", and they were somewhat impressed despite it being far easier to just press the 'next song' button.
I then jokingly asked it to "Kill Pliskin" (Pliskin being the nickname for my friend). It then asked if I wanted to call him

I was pretty impressed that it managed to find the phonebook entry from what I said and have since used it a few times instead of scanning through the phone book.
Any other funky commands for the voice recognition? I assume it can't find song names?