Cheers Knut.
I notice on RateBeer you have several Irish beers listed as having been served on cask. I can assure you, sadly, that these were all kegged.
We wouldn't want to get visitors' hopes up. I was reading a blog recently where a London-resident Australian, bored with local Guinness, wrote about looking forward to coming to Ireland for an authentic pint of hand-pumped Guinness. Poor kid.