Comedian Yakov Smirnoff painted the mural "America's Heart" on the World Trade Center's ground zero.
Smirnoff was an art teacher in Odessa before he came to the United States and became known as a comedian. After 9/11, Smirnoff painted "America's Heart," a pointillist-style artwork with one brush-stroke for each victims of the attack. A giant mural of his painting was displayed on a damaged skyscraper overlooking the World Trade Center ground zero. (Source)