If you're anything like me, you've been jonesing for your annual Gerard Butler action fix, and to the rescue comes STXfilms, which has announced it will release Greenland on premium VOD on Dec. 18. See, that's what happens when you move, Dune! Gerry Butler comes in to take your date and steal your spice! Ric Roman Waugh directed Greenland, which follows one family's fight for survival as a planet-killing comet races to Earth. Butler stars as John Garrity, who leads his estranged wife Allison (Morena Baccarin) and their young son Nathan on a perilous journey …