Comic-Con 2007 (video)
On the plane...
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A man riding a bicycle appears in the Orchid Orientation film shown at Comic-Con 2007. The footage of the man appears upside-down for a very brief moment (approximately 1:43 into the film). The identity of this person is unknown. The footage appears to have been shot at the Barracks.
The original image from the film
The same video of a man riding a bicycle appears also in the flashback of "The Man Behind the Curtain" as well in the Season 5 episode "Namaste". He appears in the beginning of DHARMA Initiative's welcome to the Island video.