"The Big Bang Theory" 8 p.m. CBS — The gang wonders what life would have been like without Sheldon.
"Grey's Anatomy" 9 p.m. ABC — April's wedding day arrives.
"Project Runway All Stars" 9 p.m. Lifetime — The six remaining designers visit QVC and must fashion a red-carpet gown.
"Two and a Half Men" 9:31 p.m. CBS — Jenny's one-night stand could turn into a second date with some help from Walden.
"Scandal" 10 p.m. ABC — Is Liv's mom as bad as Liv thinks she may be?
"Elementary" 10:01 p.m. CBS — A hedge-fund manager running a Ponzi scheme dies.
"Parenthood" 10:01 p.m. NBC — Amber confronts Ryan about his problems with her spending time with the band.
