+1 to Northern Brewers Kits. I am sure some of the others are good too. But, I have used NB in the past, as well as using their recipes..... Always been good.
Kegged/Serving: Porter, Helles, British Bitter, Dark Mild, Oatmeal Amber, APA
Bottled: Barley Wine, Bourbon Barrel Porter, Strong Scotch Ale, Sour Belgian Golden on Cherries
Primary: IPA, British Bitter, American Wheat, Dortmunder, German Pils
Secondary: Sour Cherry Stout, German Pils, Dortmunder
Future Brews: Dark Mild, British Bitter, Oatmeal Amber, American Brown, American wheat, American Pale Ale