Visit for more from Frozen! Frozen audiences were invited to join the act -- literally -- this past weekend as more than 2000 .\r<br>\r<br>Josh Gad, who voices the character Olaf in Disneys Frozen, surprised the audience of a sing-a-long screening recently at the El Capitan Theater in Hollywood.\r<br>\r<br>\r<br>\r<br>\r<br>\r<br>For more movie news, stories and videos visit: .
