Ed's paper bag is likely a reference to the character Faust from the Guilty Gear video game series, who also wears a paper bag over his head. Dom talked about Guilty Gear often in his rants prior to this strip.

Dom speaks:
"running gag" is a phrase I suggest you add to your repertoire...

"Fly Me To The Moon", best known as a Frank Sinatra song, was used as the ending theme for Neon Genesis Evangelion.

Dom speaks:
As a random note, Ed and I used to sing this one rendition of Fly me to the Moon that we loved for its sheer terribleness. I think it was something like episode 8's ending...
"FRY me to za moon and let me PRAY among za stahz! Let me see what SPLING is like on Jupitah oah mahz!"