GF1 Video versus older Pens

I recently bought a GF1 and I find it's the only one of my m4/3rds cameras which produces video files which can be played directly from my telly's card reader.

My latest Olympus Pen is the e-pM1 which I assume has somewhat more advanced video than this old GF1, but is it 'better' in any aspect or has some extra qualities?

Does anyone have experience with both the GF1 and a range of Pens to advise me on which of my cameras has the highest video quality, both unhacked and potentially?

(Please don't comment unless you have used both types for video...)