Since I bought Voigtländer lenses (Ultron 40mm f/2 and Color-Skopar 20mm f/3.5) for my 5D MkII, I have been very interested in Nokton 25mm f/0.95 for micro four thirds system. I have found Voigtländers very pleasing lenses which are extremely sharp and which produce very beautiful bokeh.
I posted here earlier that my next camera may well be Fujifilm Finepix X-100 but now I am reconsidering that because of this wonderful Nokton lens is haunting me all the time. It would be very nice for my E-P1 or any other m4/3 body later on.
Here is one short review in German (includes some nice pics shot with it).
And here is a Flickr group for this Voigtländer.