Frank Sinatra captured by photographer William "PoPsie" Randolph during a 1943 concert. Author Ben Yagoda points to Sinatra as one of the interpreters who helped revive the Great American Songbook. William "PoPsie" Randolph/Courtesy of Riverhead hide caption

itoggle caption William "PoPsie" Randolph/Courtesy of Riverhead

Since November 2004, PostSecret founder Frank Warren has received more than 500,000 postcards with secrets written on them. James Duncan Davidson/TED hide caption

itoggle caption James Duncan Davidson/TED

The documentary Red Army profiles Viacheslav "Slava" Fetisov — one of the most decorated athletes in Soviet history. Slava Fetisov/Slava Fetisov/Sony Pictures Classics hide caption

itoggle caption Slava Fetisov/Slava Fetisov/Sony Pictures Classics