I always thought Benedict was tall because he's the same(ish) height as Mark Gatiss who I know is over 6 feet. I'm terrible at that sort of thing though.
Martin Freeman is perfection itself.
A while ago I watched bits of the 'making of' Ironman and saw Downy Junior on a raised walkway next to Gwyneth Paltrow. I'm ashamed to say I burst out laughing. I've nothing against shortness, I'm the short side of average, it was just an odd & unexpected sight.