"Can you believe it?" - Raphael, from "The Big Cufflink Caper!"
"This is amazing!" - Leonardo, from "Turtlemanic"
"Just in time!" - Donatello, from "Shredder's Mom"
"I think it's time to party!" - Michaelangelo, from "The Beginning of the End"
Welcome back, One Radical Dude. I missed ya.
"How very thoughtful!" - Krang, from "Four Musketurtles"