what are the worst episodes in your opinion?

Wizboy* Pick a Nose* Brain Drain* Chicken Pox* Excuse Me* Marsha, Marsha, Marsha* Total Recall* Cold War* Sigmund the Sorcerer* Separation Anxiety* Strings Attached* Crib Notes* Kids in the Hall

and Fanboy Stinks* I, Fanbot* Fangboy* I'm Man-Arctica!* Schoolhouse Lock