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 closer I get to retirement, the more I feel it will be a huge change, a shock, because athletics has been the core of my whole life. I know I'll miss the feeling of running fast, the adrenaline rush, and hearing the crowd cheering me on.

Set your sights high, the higher the better. Expect the most wonderful things to happen, not in the future but right now. Realize that nothing is too good. Allow absolutely nothing to hamper you or hold you up in any way.