What was the point of Burton and Taylor?

Watching Burton and Taylor (BBC4, Monday) I felt a bit like I do when I go to the theatre — or, more often, when friends have kindly taken me to the theatre. ‘Are you enjoying it?’ someone will ask. ‘Oh, yes. Very much,’ I’ll lie. For the truth is, no matter how well done it all is, I’d still so much rather be doing other things.