I had really high hopes for this tequila after reading about it on here for some time. While it did not meet my expectations it was still a great tequila. I was probably wrong in my expectations anyway.
I prefer lowland tequila versus highland tequila. DF has a great nose. There is definitely some olive notes and the finish is very unique.
I paid $49.99 through an internet retailer. It is worth it. The bottle is stunning and fitting. The tequila is very stunning.
I drank this DF neat and in margaritas. I preferred it neat. Some tequilas really strut their stuff when in a cocktail but this one did not require anything else.
I would recommend this tequila. I also plan to try the 100 proof blanco offered by Don Fulano.

Purchased a bottle from Top Line Liquor for $45.99 on 10/24/09. Tasted out of a snifter. An excellent blanco, full of character, Don Fulano blanco is totally top shelf to me. Personally, I would never mix this one.

Aroma: A very present nose of agave, green olive, and grass.
Initial Taste: A semi oily mouth feel, on the tip of the tongue, its mildly sweet with no bitterness.
Body: A very earth agave body, with bold hints of olive.
Finish: A long semi heated finish, with a lingering olive aftertaste.

Recently I have found myself preferring Don Fulano silver to all other blancos - even Casa Noble Crystal. The nose is a wonderful cooked agave and floral aroma. The initial taste is peppery with plenty of agave (the sign of any good blanco), and when allowed to rest in the mouth, a subtle sweetness of citrus and mint is brought out. The editor mentioned grapes and so I tasted again with that in mind. There is a hint of bitterness and a flavor I would describe as a grape-seed oil. I'm willing to admit that I could be over-thinking it, however. The finish is short, sweet, and smooth - perfect for a blanco.

Don Fulano silver is a must try for anyone who enjoys unaged tequila.