prob Spurs (obviously won't happen though), then Arsenal.
I don't include Chelsea in the whole "get behind the English team" ethic, same goes for City, Leeds and the granny stabbers.
I've no beef with Arsenal, I just have a soft spot for Barcelona.
Having said that, I'd rather watch a good game, with Arsenal winning, than watch a shit game with Barca winning (that won't happen though, the second leg is gonna be a great game of football, whoever wins).