I have to say I love the British crowd. While they obviously cheer for Murray, they still respect Djokovic and cheer for him when he pulls off good points. Let's only see whether they'll boo him if he loses his drive like Vettel at Silverstone... :p
Seriously, though, I wish people were like this in many other countries. Having a bit of respect for the rivals in Davis Cup matches would be a great thing IMHO. ;)