I don't know if it is presently, but again, its one of those shows that you'll see in reruns for a little while, then in disappears, then reappears, then disappears, etc, etc.
1. It was a very popular show, but had very stiff competition, so it only lasted for two seasons.
2. One of the main characters was played by two different people.
3. A few movies followed it in succession, with at least one of them with the original cast and crew.