There has been a few articles circulating on Rafa; Johnny McEnroe says & has always been adamant on praising our Rafa! Here are a few:

John McEnroe touts Rafael Nadal
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Modern Tennis Lacks Colourful Characters Says McEnroe
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"I wish people embrace and encourage players like Rafael Nadal when they emote with a clenched fist or react loudly. Sport needs lively characters," said McEnroe known for sublime artistry on court as well as theatrical displays during his prime in the late 1970s and '80s.

McEnroe: Nadal's athleticism unrivalled
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McEnroe says Nadal can surpass Federer
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John McEnroe says Rafael Nadal is building a resume that could make him the greatest of all time.

ALSO
Andy Murray was interviewed & mentions Rafa a few times:


Nadal can beat Federer title record—Murray 
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"This season he has made a big step forward and can break any existing record. I think it depends more on his physique than on his tennis. If he remains healthy, as he was during the second half of 2010, he is on track to catch up to Roger Federer or anyone," he told sports daily Marca.
"It is difficult to say that Nadal is the best player of all time, but he is without a doubt amongst the two or three best players in history. He has won the four majors, the Davis Cup, the Olympic gold medal. And he is only 24."