SEASON FINALE: This show has had some ups and downs of late, but tonight’s episode definitely qualifies as TV Worth Watching for anyone who’s followed the series for the past three seasons. It’s graduation day at McKinley High, and viewers will learn more about the new directions the senior members of New Directions are taking now that their high school years are complete. Tonight’s show also features a guest appearance by Gloria Estefan, playing Santana’s mom, Maribel.