The Matrimonial Metric
S11, E12: To discover who would be most qualified to be Best Man and Maid of Honor at their wedding, Sheldon and Amy subject their friends to a series of secret experiments; Penny reveals her true feelings about Amy.

S11, E12: To discover who would be most qualified to be Best Man and Maid of Honor at their wedding, Sheldon and Amy subject their friends to a series of secret experiments; Penny reveals her true feelings about Amy.