Yeah, I have used some AMAZING lenses made by Zeiss. The two that come to mind: the 180mm f2.8 sonar in P6 mount and the 135mm f2 ZF for my nikons.
I also have the Zeiss 135mm f/2 ZF for my Nikons. You are correct, Zeiss makes some amazing glass. Here are the others I use:
28mm f/2 ZF Distagon for Nikon
21mm f/2.8 Biogon for Contax G
28mm f/2.8 Biogon for Contax G
45mm f/2 Planar for Contax G
90mm f/2.8 Sonnar for Contax G
12mm f/2.8 Zeiss Distagon Touit for Fuji X
35mm f/1.4 Zeiss Distagon ZM for Leica