My current one, an Acer AS8951g 'desktop replacement'.
It's 'only' a Sandy-Bridge email@example.com/3.0 Ghz, but I love it, and there is nothing it won't run.
It has an interesting little party-trick up its sleeve, too. The touch-pad is removable, and functions as a remote when playing videos or music.
See pic & system specs below.
EDIT: Specs listed on this forum are for my Win 7 machine (an Acer AS5735) so I've c&p'ed the correct specs from EF.