This television episode refers to:
October 16, 2001 - May 13, 2011
Dwight concludes his performance review by saying "And in conclusion, I think that Lex Luthor said it best when he said "Dad, you have no idea what I'm capable of". Michael asks if that is from Superman. Dwight tells him that it is from 'Smallville', and that is why he thinks he deserves a raise.