I've seen a few fixie bikes like this around town, probably another hipster fad. Unless someone can explain a reasonable rationale for this then I must conclude it is completely daft.
So are you saying people do this intentionally? I can't see any possible reason for doing it. The wheel centre is behind the steering axis so the steering must be really really odd.
The Bates Diadrant forks mentioned by Bagpuss still kept the centre of the wheel in front of the steering axis and basically just put the rake in a different position of the tube. There is definitely a Bates look about them though, lol. I believe that the Bates fork design came about because makers were not allowed to fit transfers to bikes used in races so the Bates brothers came up with them so as to be easily recognised as one of their bikes.
I saw a bike in the Transport Museum at Coventry recently and that had reversed forks. Seems it was a "Stayer track bike" and they had reversed forks. They weren't bent though! Thread I started about it here http://www.retrobike.co.uk/forum/viewto ... highlight=
1936 Hobbs of Barbican, 1954 Viking "Ian Steel" model, 1984ish Raleigh Royal, 1991 Orange Prestige.