Since everyone else is sharing, I've been a part of RPPR since Ross said, "Hey you did some acting in high school. I need some one to voice this one character (Deviant Boy)."
And I'll never forget telling everyone to leave the room so I could do my lines for The D&D Session that Mostly Wasn't because Tom, Chris, and Ross were laughing so hard that they couldn't stop when I had to do take after take after take.