The Big Bang Theory: 10 Reasons Sheldon Cooper Should Be Killed Off

8. His Quirks

Name one person who finds the *knock, knock, knock* €œPenny?€ routine amusing anymore. Go on, do it! Its decline in popularity is noted in how Sheldon transfers this exact quirk to other situations, such as knocking on his iPad in an effort to get Stephen Hawking€™s attention? There are countless other quirks Sheldon has, many of which have worn thin on varying levels, to the point where most have also been transferred to new situations in a similar manner to the three knocks routine. His quirks could also be taken as a sign that his character hasn€™t grown a great deal since the series started, but that'll be got to later. For now, let€™s wallow in the fact that knocking on your neighbour€™s door and saying their name three times in-between is still considered amusing.