Raj and Emily go out on a double date with Howard and Bernadette on The Big Bang Theory Season 7 Episode 20.
The dinner gets awkward when Emily remembers that she's met Howard before. The others get good laughs from the story, but Howard is embarrassed.
Meanwhile, Sheldon decides he wants to give up his field of study, string theory. Penny gives him good advice, but when he gets drunk he makes a big mistake.