Bernadette’s high-pitched voice comment
Howard tries to flirt awkwardly
Dungeons & Dragons
Raj talks about Cinnamon
Sheldon knocks three times before entering
Video games
Soft Kitty
Comic book store
Sheldon sits in “his spot”
Nobel Prize is mentioned
Amy talks about her work with monkeys
Penny misunderstands a scientific concept
FREE
Penny says ?Oh, sweetie?
Leonard adjusts his glasses
Raj struggles to talk to women
Star Trek reference
Elevator mention
A whiteboard full of equations is shown
Sheldon corrects someone’s grammar or fact
superhero t-shirt
Bazinga!
Cheesecake Factory
Howard mentions his mom
Roommate agreement