I recently sat down with Michael Sheen, who stars as the villainous Dr. Blair Müdfly in director Stephen Gaghan's Dolittle, opening this weekend. While sitting in his trailer on the Universal backlot, Sheen and I had a wide-ranging conversation about working with Robert Downey Jr. and spending so much time looking at a tennis ball on set, the success of Amazon’s Good Omens, his idea for a Columbo episode, why he agreed to co-star on Prodigal Son, his upcoming limited series Quiz (which is about a huge Who Wants To Be A Millionaire scandal in …