I'm Picking Mushrooms to Destroy Goodness (Episodes 275-281)

Theresa becomes Gwen's maid of honor, Chad's injury is finally discovered - as is his love - kind of, Ethan sends very stupid signals to Theresa, and Sheridan is almost killed due to the idiotically unsubtle Hank. Plus, Evil Charity has a whole mushroom moment. 

Attributions: "Windswept" by Purple Planet Music.