The rangefinderstore.com received a shipment of Zeiss Sonnar 50mm f1.5 lenses this week. They have been backordered since April of last year.
Although a bit tough to use because of the shallow depth of field, it's a wonderful lens and people love the look. It works on the Zeiss Ikon camera, the Leica M series and the digital M9. I use one myself and love the look. The speed is nice as well.
This shot was taken with the lens.
You can find the Sonnar's at the rangefinderstore here.