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Best. Comedy. Ever. Even with all the cast changes, an absolute classic. Puts today's shite like all the sitcoms with a fat guy and a hot wife to shame.
I'd go with underrated except for repeated shark-jumping. Amazing recoveries most of the time, but still.
A great show with great characters. It features some of the best lines. And the spin-off from the show was a long-running hit as well.