truffle oil?

I bought some today.  Haven't a clue really what to do with it.  My only 2 references being its vague use in recipe books and on the Iron chef.  ooooh Truffles.  So i put some on my spiced pumpkin pizza tonight.  Does it taste any better?  haven't a clue.   but it tasted good.  So if anyone knows the specifics of Truffle oil, i would love to know.