Thrash (now on Netflix) could’ve been titled Sharkicane, but it’s clear that B-movie director Tommy Wirkola (Dead Snow, Violent Night) wants to differentiate his flick from less-serious fare. Not that this disaster/shark attack hybrid thriller is particularly serious, mind you, but its tongue isn’t so deep in its cheek to be lumped in with the onslaught of ultra-cheapo Syfy schlock that nearly ruined the joy of a good old-fashioned chomp-chomp/bleed-bleed timewaster.