Blue Friday Is Upon Us! My two favorite Friday night shows are back. CSI:New York along with Blue Bloods. Both shows are based upon the lives of New York Police Officers. CSI:NY features veteran actor Gary Sinise while Blue Bloods features Magnum PI star Tom Selleck. Each show has become a Friday tradition around here. I love the forensics of CSI with the family/police procedural of Blue Bloods. I love both shows.