My personal philosophy is all things in moderation. So if it makes him happy to watch the Wiggles or some old-school Fraggle Rock on DVD, he gets to. But it's the responsiblity of me and mom to keep it reasonable and keep the house a happy place for everyone.
For example, suppose a child wants to read a good book, you take it away, and he "gets over it in seconds". Does that mean all is right with the world? No. Whether or not he remains upset about the book, he's still missing out on a wonderful book that could have benefitted him.
One also ought to think about how to correct errors. For example, pulling the plug on the TV avoids any input from someone who might know something you don't (like, your child might know more about how important it is to him to see a particular show). Wouldn't it be better to reach an agreement? The more right you are, the easier that will be, won't it? But if you have made a mistake one time, then getting others to agree will be harder, so you get an opportunity to avoid that error.