"I want it as an excuse to just knock on Downey Jr.’s door because I’m staying quite near his office in Venice [California, while Cumberbatch is filming “Star Trek”] and I just want to knock on the door and go, “I think we should have a cup of tea. We should maybe have a cup of tea and talk about this. It’s quite an odd moment in pop culture. Actually, it’s an excuse to talk to you, really, on my part, because I’m a huge fan. Hello!” [Laughs.] Just do that."