Nicknamed "Sweet Lou", a popular major league baseball team manager. Formerly a player for several teams in the 60s-80s. Since then he has managed for five teams, currently the Chicago Cubs. He is famous for becoming very angry at umpires which usually results in him screaming in their face and then throwing his hat on the ground, which is very funny to watch.
From Wikipedia: "In a game on September 18, 2002 in a 3–2 (10) win against the Texas Rangers, Lou Piniella came out to argue a call in the bottom of the ninth in which the umpire called out Ben Davis after a close play at first and was immediately tossed by first base umpire C.B. Bucknor after throwing down his hat. Afterwards, he kicked his hat several times, aggressively approached Bucknor as he was screaming in his face, and kicked dirt on him as well. After being restrained by first base coach Johnny Moses, he then ripped first base from its mooring then threw it down the right field foul line twice after he imitated the umpire tossing him out."