I am a big fan of mustard. I like lots of varieties -- stone ground, whole seed, Dijon, even plain old "yellow" on occasion. But they're all mustarda non grata with me since I discovered Sierra Nevada's (yes, the beer makers) Pale Ale & Honey Spice mustard.
Sierra Nevada makes a number of other mustards though I'm so enamored of the Pale Ale that I have not yet had a chance to try them. And they've just begun making an organic cheddar that is tasty.