Plot: A set of replica Muppets has Chum feeling green with envy; But will going gonzo over these furry friends land him the goods? Meanwhile, Rick flips over an autograph book from the 1800s, but are the signatures the real deal? Next, when a pair of pants supposedly worn by Keith Richard rolls into the shop, Corey teaches his brother Jake you can't always get what you want. And later, Rick has a "finger-lickin" good time when he pops over to a gallery in L