If you are a great dramatic actor then you often don't know if people are enjoying your stuff at all because they are sitting there in silence. But with comedy it's a simple premise. If it's funny people laugh. If it's not they don't.
Queer Eye for the Straight Guy is a form of service journalism. To be successful I think it has to be a combination of a good story it has to be funny and it also needs to be packed with useful information.
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TV is easier: it's all planned out for you and the audience is there to see a show and they are all pumped up but when you are in a comedy club you have to be really funny to win them over.