Brian "Kato" Kaelin has finally found a role he was born to play: a freeloader. O.J. Simpson's infamous live-in pal has shot a pilot for a television series titled House Guest. "It's a show where I go across America, I knock on doors of the unsuspecting and invite myself in to spend a weekend with the family," Kaelin told Barbara Walters on ABC's 20/20 Wednesday. Kaelin assured Walters, however, that off-screen he finally has his own home.