Google for "Gone with the wheat". (edit: I see somebody provided the maker's name for the sorghum kit)
It's an extract kit, canned sorghum syrup plus hop extract and yeast, 3 versions (presumably just the hops and yeast change)
I've got one going now, but I've messed it about a bit - brewing short, and in demis instead of a bin - and it seems to be taking a long time
Alternatives:
Ersatz ales: search the jimsbeerkit forum for the maker "Duncan Incapable" and his recipes "Four Star" and "Red Diesel"
Really weird ingredients list, but turns out good ale.
Try malting some millet and doing an all-grain with it. If you search here for 'millet' you'll find how I got on with that.