Zac Efron Is Calendar Sexy By Lisa Hiser - September 15, 2009 0 Facebook Twitter Pinterest Tumblr -Who wouldn’t want Zac Efron hanging on their wall all year round? Looks like there will be an official Zac Efron 2010 calendar. Check out the pics below thanks to ONTD & unwrapme. What do you think of the pics? Will you be buying the calendar?