I actually have two. 1. Did Sheen and Tennent have as much joy offscreen as they absolutely seemed to onscreen? Because I don't think I've ever seen two actors give performances steeped in such utter joy ever. And 2: What is the name of the dog who played Dog?

1) They did, yes. The work was long and hard, in hot places and cold places, and they were always troupers. David had desert winds blowing sand in his face while acting with special contact lenses in. Michael was cold and tired. But there was always so much joy.

2) Ollie.