OK guys and gals, I think I have found the ultimate cat food. It puts Science Diet and Iams to shame.
I just bought a variety pack of this. This isn't stuff you can get at the supermarket, you have to go to a pet store that sells speciality foods:
http://www.petropics.com/catalog.htm
^
The cat stuff starts about halfway down the page.
I opened a can of the Mackerel (not shown on the link) and was like, "Oh my god, I just might want to eat it myself!"