K.I.L.R.O.Y.: I'm not sure how to say "You're Welcome" in Japanese, so I'll just say... De nada.
This fan interpretation of Act II's second half. Every single word.
Lasergoose: "Climb... Climb to the tooooop of the world... And when you staaaaand tall, you will see..." Joe sings, breathlessly, between swigs, as he nears the top of the tower. Then he forgets the rest of the words, and starts over. Six times.
From Due Vendetta:
In this video, the crowd gets a little... too into The Sons of Fate. Two words: Nerf gun.
"These people watched you die..." "And apparently they're trying to kill me as well."
Girl, it's time for me to go... Where only a man can go. My heart is on fire, and if I don't feed it fast, It'll just burn up and fade. I love you, girl. You've got to know that. You'll be so proud of me. You'll watch me hop on my pegasus, girl. Ten thousand angels singing for me as I ride my pegasus through the city, To the edge of the city and then out of the city and into the fields... Fields thick and strong like the beard that I'll grow. You'll watch as I ride through the night. You'll see, I'll set the night on fire with my burning heart and my glorious man beard! And everyone will love me, and I'll finally be a man! I'll finally be a man!
Tons of things from the news posts, especially the random tangents Commander and Panther get into at times, as well as an occasional message from Murphy.
The Ascended Meme of Panther doing a mostly Wood Man Due Vendetta at the August 23 2012 West Hollywood show, with plans to save the all Wood Man song for another time.
The most common technical mishap in live shows is one or both "Sons of Fate" helmets not working. This is often lampshaded in-character.
The band's worship of Shark Week; once they were asked how Doug Fetterman died, and they responded by saying a shark ate him over a week and that's how Shark Week began.
When Scartoe and the Keymaster left the band, the Protomen commemorated them both and said all who have gone would play on an eternal stage of glory... except the Keymaster, who'd be a pharmacist.
At MAGFest 2013, the band reconvened in Jamspace, after their main stage show was cut short, to play Due Vendetta on a meowing plastic cat keyboard christened "Freddie Meowcury". It was equal parts funny and awesome.