Purple Label, the odd bird of the Ralph Lauren fragrances, perhaps?
It is a refined fresh and green masculine fragrance with a distinctive leather/suede note in the base and some tobacco as well. Very masculine, and can work for formal occasions. sjohnjay says that Purple Label smells a bit watered down - yes, but I don't think that's too much of a bother. I find this to be unique, and a great smell with good sillage as well, despite the average longevity on me. It is hard to find and quite expensive, though.