I'm hoping Roger Federer kicks his butt, but I must admit Andy's improved his game considerably over the past year or two. Being from "the colonies" I care not a whit about Andy the Brit breaking the long string of Wimbledon losers, I'd just like to see Fed get his last moment in the sun before it's all over for him.
I don't expect Andy to win, but I hope he does. As a kid in the 1970s it seemed such a remote possibility that a homegrown figure could ever be in the Men's Final, and then we had the conveyor belt of American players who seemed to win everything (I used to cheer Lendl on just because he was different!).
Personally, I think Federer's the best player that ever lived, but he's won enough - let Andy have a go!
And, to be fair, Murray's already won in many ways by simply getting to the final, so we shouldn't devalue the achievement even if he gets spanked.