The Big Bang Theory Episode 6.19 The Closet Reconfiguration

Bernadette & Wolowitz host a dinner party, but Sheldon brings take-out Thai food out of habit since the party fell on his Thai food night. As punishment for being rude, they make Sheldon organize Wolowitz' extremely cluttered closet, and he finds an unread letter addressed to Wolowitz from Wolowitz' father when he was 18 years old. After much debating, Wolowitz opts to not read the letter and burns it instead. Later, Bernadette, Amy, and Penny want to hear what the letter said, so they try to convince Sheldon to recite it to them, since he read it as he was cleaning. Sheldon winds up revealing the contents of the letter to everyone but Wolowitz, which infuriates him. Later, everyone offers to recite a different rendition of the letter, including the real one, and then let Wolowitz pick the one he prefers the most. Touched by the heartfelt renditions his friends provided, Wolowitz opts not to choose, and instead focuses on the happy memory they all helped him create.