You've got to love the Zeiss lenses. They now make them in five different mounts including Sony Alpha, Nikon, Canon, Pentax and the Leica M mount.
As a longtime rangefinder shooter I've always enjoyed shooting with the fast glass you can get for the system. One lens that I would love to own is the Zeiss Sonnar T 85mm F2. It's out of my price range but very nice to hold for a few minutes.
Zeiss had a display at the Henry's Show but www.bigcameraworkshops.com stocks most of the lenses for the M system and Nikon and Canon mounts.