Have always loved the refridgerator picture. I think it was posted here some months ago.
The press conference for an atom is from John Campbell's Pictures For Sad Children. The meteor one is from Ryan Armand's Minus. It's prolly the best known strip from the comic. (and yes, she totally hits it out of the park)
The funny thing about the Peej redesign is they left the window in, they just colored it differently. If they'd filled it in with the power button logo she's been using on her belt, it would be great. As it is now it vaguely resembles it, but it just looks like a zipper around her window. And pants. She now has pants (which i have no problem with!)