Jay Leno's Garage Jay competes against race car driver Bryce Menzies in a soapbox race. 7 and 10 p.m. CNBC
The Big Bang Theory Koothrapalli (Kunal Nayyar) discovers that the woman he’s been dating (guest star Beth Behrs, “2 Broke Girls”) has a husband (guest star Walton Goggins, “Justified”) who is very unhappy about the situation. Jim Parsons, Johnny Galecki and Kaley Cuoco also star in this new episode. 8 p.m. CBS
Supernatural A potential spinoff series gets a pilot of sorts as the missing Sam (Jared Padalecki) and Dean (Jensen Ackles) are sought by several women (returning guest stars Kim Rhodes, Kathryn...