Celebrity guests including Lord of the Rings star Sir Ian McKellen, rugby great Sean Fitzpatrick and Flight of the Conchords comedian Rhys Darby were among those at a memorial service for Sir Edmund Hillary at Windsor Castle today. New Zealand opera singer Jonathan Lemalu sang the aria Lord God of Abraham, described by Prime Minister Helen Clark as a “very special performance by one of our most talented young singers”. Miss Clark said a karanga by Mereana Hond was “very, very emotional” and “very moving”. Celebrities and friends attend Sir Ed memorial