Thursday's TV highlights: The CW's 'Supernatural' on KTLA
The Big Bang Theory Bill Gates guest stars as himself and he’s considering making Penny (Kaley Cuoco) a partner in a new business. Of course, Leonard, Wolowitz and Raj (Johnny Galecki, Simon Helberg, Kunal Nayyar) are eager to meet him. Jim Parsons also stars. 8 p.m. CBS
Superstore A visit...