If you heard me sing, you would just plug your ears and run, screaming, the other way. I promise.
I've never been on a show that's run for more than a season.
If you get on a TV show that's successful, odds are that you're playing the same character for as many years as the show is running, which can be its own blessing, but it can also be a curse because you're playing the same thing and that can be tiresome.