I think the reason The Office didn't work is that it didn't have the spoof documentary feel that the UK version had, even though creators Ricky Gervaise and Stephen Merchant adapted it for the American audience. I also like Extras on HBO, Gervaise's newer comedy.
Well I dunno, with the Office, it just isn't funny.... I don't think you wrap it up with different camera behaviors you wind up with a better show.
Arrested tried the "reality style" cinematography with scripted episodes.. and it really made it difficult to watch, even though the show was funny... the constant jumping of the camera nearly made me move on even though I enjoyed the show.. they toned that down quickly though, and kept the feel.