In that scene with Ben and Locke where everything got all shaky and you briefly see a person, I did a frame by frame playback and the person sitting in the chair has the exact profile (including that very distinct forehead and extremely distinct nose) of Ben!
Stealing Cathy’s thought, have we gone a little 6th Sense here? Who of the Others have the Losties actually physically contacted and conversed with? Richard? I’m not so sure anymore. Patchie? Definitely. Juliette? Definitely. Tom? Definitely. Ethan? Definitely.
The revelations in tonight’s Lost episode were awesome!