"The Irish Pub Formulation" (Season 4, Episode 6) of The Big Bang Theory is a highly regarded episode that centers on Leonard's secret relationship with Priya Koothrappali and Sheldon's complicated, fictional alibi involving "Maggie McGarry". Featuring the introduction of Priya and the absence of Penny, the episode is praised for its comedic tension and culminating in a significant "roundelay of revelations" regarding the group's betrayals. Read the full episode review at IGN .
