Federer proved this week once again that he is a good doubles player. Every time he plays he and his partner always have good results vs top doubles teams and often make Final (not many titles won lately but probably due to lack of time with partner). I honestly feel that Federer playing doubles would not only be great for him as it would keep him on his toes etc it would also be a great advertisement for the game. I mean imagine it, one of the all time greats of Tennis decides to take doubles Tennis seriously. It would instantly bring more interest into the format and gain it the respect it deserves.