Guest Stars William B. Davis as Cigarette-Smoking Man Joel McHale as Tad O'Malley Annet Mahendru as Sveta Giacomo Baessato as Doctor Hiro Kanagawa as Garner Rance Howard as Old Man Co Starring Sandy Da Costa as Alien Aliza Vellani as Nurse Sandeep Gardiner Millar as Man in Suit Shaker Paleja as O.R. Surgeon Nneka Croal as Squad Leader