It hasn't been evident here at the US Open, granted. He just seems to get very full of himself sometimes, and likes a good moan at the line judges. He just can't seem to let anything go. Like after the final at Cincinatti, where he told Nadal, "I was glad to play you before you retired." Part of me thinks he was just being funny, but another part is sure that Nadal's earlier comments stung his ego and he just HAD to say something.
Also them adverts he does, like the watch one and the land rover(?) one. To me they seem so smug.
Then there's all the baby steps he does, and the blowing kisses at the crowd, it's just all so smug! (not the baby steps obviously, they're just ODD).
I'm saying 'seems' cos to be honest it's all 50/50, I can't say he's a dick for sure, (unlike some other players) cos I just don't know. But personally, I'm annoyed by him.