Jeff Halpern of the Tampa Bay Lightning laughs as he sees fans dressed in costumes for Halloween during the pre-game warm-ups on Oct. 31, 2009.

Fans of the New Jersey Devils dressed as a pair of dice to attend a game on Oct. 31, 2007.

Utah Jazz fans were ready to rock out during the Oct. 30, 2009 game against the Los Angeles Clippers.

Montreal Canadiens fans wear costumes for Halloween during an Oct. 31, 2009 game against the Toronto Maple Leafs in Montreal.

A couple of fans dressed up for Halloween on Oct. 31, 2007 at the Pepsi Center in Denver.

A Boston Celtics fan wore a makeshift ghost costume during an NBA game played in 1986.

A U.S. fan wearing an American flag as a cape and carrying American beer is pictured before the Group C first-round 2010 World Cup football match on June 18, 2010.

On Gumby Giveaway Day at the Wachovia Center in Philadelphia on April 3, 2004, a life-sized Gumby was on hand to watch the game between the New York Knicks and the Philadelphia 76ers.

New England Patriots fans sported some old-school styles while partying in Houston on Jan. 30, 2004.

A Cincinnati Bengals fan wears a stormtrooper outfit during the NFL game against the Detroit Lions on Dec. 18, 2005.

A golf fan in a Tiger costume enjoys the atmosphere during the third round of the 138th Open Championship at the Ailsa Course at Turnberry Golf Club on July 18, 2009.

A fan in a Michael Jackson costume performs as the New York Yankees take on the Philadelphia Phillies in Game 3 of the 2009 MLB World Series Oct. 31, 2009.