Thelma and Rev's Relationship
I think the writers definitely dragged out their storyline way too long. The fact that EVERY TIME they were about to make a commitment to one another and/or get married, the reverend would wimp out or Thelma would go crazy and join the army. I mean, yes, it's a comedic look at fictional characters, but it bordered on being TOO outrageous and as if they couldn't come up with enough reasons to keep people guessing as to whether it was going to happen THIS time. You can only play that card so long before it's just simply tiresome. I don't think they were even married until season 4.
And for god sakes, how come no one ever bought Thelma a cookbook? What kind of wife never learns to cook for her family? The bad cook gag got old, too.