What's the Kennection? #256

The NHL's Frank J. Selke Trophy is given to the player who has the best defensive game despite playing at what position?

What phrase first appeared on U.S. currency when the short-lived two-cent piece was first minted in 1864?

According to scientific legend, what did Archimedes exclaim when he discovered the principle of water displacement in his own bathtub?

What packing product made from wood slivers is also the trademark sign-off of Marvel Comics' Stan Lee?

What Latin quotation, attributed to Brutus, did John Wilkes Booth shout after assassinating Abraham Lincoln?

What's the "Kennection"?