After weeks of worries about whether American audiences would understand his humour - or his accent - and how US celebrities would take to his full-on style, viewers and reviewers seem to have loved him. As well as welcoming guests Tom Hanks and Mila Kunis onto the show: Simon Cowell, Allison Janney, Eddie Redmayne, Shia LaBoeuf and Meryl Streep also appeared in pre-recorded skits as he began his bid to win over the American public. Afterwards, he told fans on Twitter: 'Well, so many truly lovely messages about the show tonight. I'm blown away, thank you.'