Meanwhile, Howard, Raj, and Bernadette spend the night at the telescope lab, leading to awkward and hilarious tension when Raj drinks too much wine.

If you enjoy the "will-they-won't-they" chemistry of the early seasons or episodes where the main cast deals with overbearing parents, this is considered a "must-watch."

Penny asks Leonard to lie to her visiting father, Wyatt (played by Keith Carradine), by pretending they are still dating because her father finally approved of one of her boyfriends.

This review is a specific instruction to watch of The Big Bang Theory , titled " The Boyfriend Complexity ." The episode is often highlighted by fans because: