Well I'm sorry to be pedantic here but the UK roll call for rail connections is pretty good too.
Rail - Heathrow, Gatwick, Stansted, Birmingham, Manchester, Prestwick
Metro - Heathrow again, London City (open next year), Newcastle
And I just can't help pointing out that, in a close parallel to HLX, both Ryanair's destinations in the UK served from Hahn (STN and PIK) have rail connections whereas Hahn itself doesn't !