I got my macbook pro in December of 2009 and I believe in the Fall of 2010 when I moved my mac from my lap to my desk it made this noise. It occasionally freezes and it will just keep doing this until I force it to restart. I think it's the hard drive but I'm not sure and I wanted to document it.
I have this same noise coming from my Macbook Pro. Did you ever figure out what it was?
benjiholzman 11 hours ago