Angry Dad Episode 3 involves Angry Dad sitting at his desk, bragging how easy his job is. Then he presses a button for no reason which blows up the Nuclear Power Plant except for his office and his boss' office, and screams "NOT AGAIN!!!", as if this happened before which is completely non canon. Then Mr. Burns (voiced by Bart Simpson) walks in and fires Angry Dad, causing his head to explode as the same appearance the power plant exploded.
This was ultimately the only episode where someone other than Dan Castellaneta voices Angry Dad, as Bart Simpson (the creator of the cartoon) voiced Mr. Burns during his brief appearance.