Arrested Development should have gone longer originally but never should have done seasons 4 and 5 ten years after the fact.
I like the Office until Michael leaves, though I thought the finale was perfect, love how they handled Dwight and Angela.[/b]
Lost would have been better had they cancelled it after season 3 and left everyone with a million questions, rather than doing season 4 and 5 and leaving everyone with a million questions.
I thought that until I went back to seasons 8 and 9 again. I think Robert California was under appreciated. They could have done more with him, I think his weirdness and intimidation of Andy made season 8 pretty damn funny. They could have ran with that for another season or two. When California leaves is when it got really bad. Season 9 was horrible, and the finale is the only saving grace. Dwight and Angela had a great arc completion, but Jim and Pam's shit got old fast. They also ruined Ryan's character throughout the show, it got so bad that season 9 was helped with him off of it until the finale.