TV highlights: Season finales for 'Grey's Anatomy,' 'Elementary' and more

FINALE WATCH: Sheldon faces an uncertain future, while Emily and Raj decide to take their relationship to a new level on the Season 7 finale of "The Big Bang Theory" (CBS at 8 p.m.). FINALE WATCH: After an unexpected tragedy on "The Vampire Diaries" (CW at 8) Season 5 finale, Damon focuses on holding himself together.