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