Mark Sheppard

It's a fascinating job, to come in and be the most interesting person in an episode. Whoever the guest star is, that's the job - to maintain the interest and the focus for that 42 minutes or whatever, and it should be a huge relief to those people that are the leads in the shows.

The thing about dancing - what it taught me all those years - is it gives you an amazing sense of discipline in forcing yourself to do things that you know are good for you but you don't really want to do.

The importance of heart health became very real for me when my father died of heart disease seven years ago. Having experienced the loss first hand, I am inspired to do everything I can to break the cycle and prevent families from losing loved ones to this preventable disease.

After decades spent in rewrite rooms surrounded by other shouting writers, I discovered that I work best alone. I like being in charge of my time, working out the problems according to my own rhythms and being able to nap. That's a big one, the napping on demand!