1 / 16The Batman signal is projected onto a building to celebrate Batman Day in Montreal. The night sky all over the world is lighting up Saturday with an illumination of the famed bat insignia to mark a special anniversary for Batman. DC Comics is carrying off a celebration of Batman Day to mark the 80th anniversary of the appearance of crimefighter Bruce Wayne and his masked hidden identity. (Graham Hughes/The Canadian Press via AP)
2 / 16A man dressed in a Batman costume poses for a photo in front of the Batman signal projected onto a building to celebrate Batman Day in Montreal. (Graham Hughes/The Canadian Press via AP)
3 / 16The Batman signal from the Batman comic book and movie series is shined on the Domino Sugar Refinery in honor of Batman Day in the Brooklyn borough of New York on Saturday. (Kendall Rodriguez/Newsday via AP)
4 / 16A woman poses for a photo beneath a Batman signal projected onto a building to celebrate Batman Day in Montreal. (Graham Hughes/The Canadian Press via AP)
5 / 16A man dressed as Batman looks up towards the Batman signal projected onto a building to celebrate Batman Day in Montreal. (Graham Hughes/The Canadian Press via AP)
6 / 16This image made from video provided by WPIX-TV shows the Batman signal projected on the Domino Sugar Refinery in honor of Batman Day in the Brooklyn borough of New York. (WPIX-TV via AP)
7 / 16Stephanie Salgado poses with her cape during the lighting of the Bat-signal commemorating Batman's 80th anniversary in Mexico City. (AP Photo/Ginnette Riquelme)
8 / 16A Bat-signal is lit in the Torre Reforma during the commemorating of Batman's 80th anniversary in Mexico City. (AP Photo/Ginnette Riquelme)
9 / 16A man holds Batman balloons before the Bat-signal lighting during the commemorating of Batman's 80th anniversary in Mexico City. (AP Photo/Ginnette Riquelme)
10 / 16Batman and Captain America walk toward the start line of the Batman Inaugural 5K from the Batman fan experience on Batman's 80th anniversary at Grand Park on Saturday in Los Angeles. (Keith Birmingham/The Orange County Register via AP)
11 / 16The start of the Batman Inaugural 5K run on Batman's 80th anniversary at Grand Park on Saturday in Los Angeles. (Keith Birmingham/The Orange County Register via AP)
12 / 16Dan Nestor of Colorado wins the Batman Inaugural 5K run on Batman's 80th anniversary at Grand Park in Los Angeles. (Keith Birmingham/The Orange County Register via AP)
13 / 16Runners chase after the Riddler during the Batman Inaugural 5K run on Batman's 80th anniversary at Grand Park in Los Angeles. (Keith Birmingham/The Orange County Register via AP)
14 / 16Runners of all ages compete in the Batman Inaugural 5K run on Batman's 80th Anniversary at Grand Park in Los Angeles. (Keith Birmingham/The Orange County Register via AP)
15 / 16Flashback Heart Attack performs during the Batman fan experience on Batman's 80th anniversary at Grand Park on Saturday in Los Angeles. (Keith Birmingham/The Orange County Register via AP)
16 / 16A man dressed in a costume of The Riddler competes the Batman Inaugural 5K run on Batman's 80th anniversary at Grand Park in Los Angeles. (Keith Birmingham/The Orange County Register via AP)
