Yeah, I'm very jealous of you Brits who can have an ice cold Guinness on tap. It's supposed to be much different than what we have here in Canada. The Canadian version has something like 200 calories a pint, and the UK version has something like 900.

Also, some Guinness purists have told me that it tastes best from a pub less than 15 miles away, since any further and the beer will get shaken up by the drive and the flavour will change. That might sound stupid, but any wine connaiseur will freak out if you shake up a bottle of wine...