Replying to I have a disk stuck in my macbook help!

So I put a blank DVD-R into my macbook and attempted to burn a movie to it through itunes, an error popped up and the disk ejected, while I was watching another movie so I set the disk aside. I put it in to try and figure out what happened, itunes never recognized it so i opened finder to see if I could figure out if anything got written or not, it wasn't in there either so I hit the eject button and nothing, again, again, nothing. So I restarted and same thing. So the disk is still in my drive with no way to get it out, what do I do?

sparknotes: Disk in drive, computer doesn't recognize, wouln't eject, how do I get it out.