I'd be rubbish as I hate TV and speaking. What makes a good TV personality anyway?

My vegan friend is on 'Kill It, Cook It, Eat It Tonight' and I've seen a bit of the trailer where he start making vomiting noises when they slay the duck. I'm hoping he becomes a tv personality like Jeremy Spake. The only other person I know who has ever been on tv (the teenage version of 'Kilroy') got laughed at for wearing leather shoes when crying about the difficulties of vegetarianism. She got really irritable when I reminded her of this. She wasn't a good TV person.