Yeah im going with ENFP as well.
If anyone here actually saw his program when he went to America and there was a little incident when he was giving money to a bunch of homeless people and then this man walked up and had a go at him because apparantly; he was in charge of this area and these people, saying they were crack-heads and Russell was just giving them more fuel for their habit.
Now his reaction to this was completely Fi. He was rankled at the idea of this 'fat sweatball' walking up and throwing his weight around when he was just trying to connect with what he saw as lost people on the fringe of society. I imagine he could also relate because of his past drug problems.
The point being that reaction is very much the social injustice face of Fi, the social injustice here being the one of common humanity and decency, rather than one of social rules.
A lot of people seem to like him though, my opinion is basically meh as im not bothered either way, but I wouldn't be lying if I said I have wondered myself what his appeal is?
I suppose it might just be that his top two functions are ones which are either low for me, (Ne), or a shadow, (Fi). But it's all about different tastes, so I cant complain.