Just finished this after stalling mid way through season 4.
It certainly lost a lot of the charm after the second season and was never the same. Having the characters grow was necessary, but it seemed to change it a little too much. I did laugh more in the fifth season than I did during the whole fourth though.
Some decently fun wrap ups. I still enjoy the Jeffster combo.
I'm a little sad it's done now to be honest.
Need to find something new to watch like it I guess.