Matt LeBlanc has found a new friend in John Travolta's wife. Kelly Preston has signed on to do a two-episode story arc on Joey this November, TV Guide Online has learned. Preston will play the best friend of Joey's sis, played by Drea de Matteo. According to a source close to the spin-off, producers initially eyed an Oscar-winning actress for the part, but the thesp ultimately passed. Here's a hint: It was not Meryl Streep. Or Brenda Fricker. Or Judi Dench....