I remember when I made a thread like this and everyone was mostly calling me creepy for it. For me, it was undoubtedly Ryan's, but I've grown to appreciate Jeff's sudden 'outbursts'. Like, for example all of the giggles he does throughout the Darkest of Days quicklook. Man, and what a quicklook that is.
EDIT: Gah, already posted above. But yeah, for those reasons I think Jeff just about takes the vote for me.