Seize the opportunity to help others with an altruistic night out. More than 300 participating restaurants across the greater Denver metro area will donate 25 percent of all food sales—for one day only—to Project Angel Heart, an organization assisting those with life threatening illnesses. While the 2013 restaurant list is yet to be released, 2012 participants provided diners an impressive range of options—from fine dining at Rioja to a casual burger and beer at the Cherry Cricket. Thu, times vary.