If you’ve been a regular reader of “Week in Sloth” (below), you’ve probably run across a mention of the Wheel of Blue Collar Jobs That Don’t Have Reality Shows Yet. Basically, network programmers spin it every couple of weeks in order to find new series. That’s how they ended up giving reality shows to motorcycle builders, repo men, exterminators, tree trimmers, crab fishermen, swordfish fishermen, oil riggers, truck drivers, auctioneers, pawn brokers, snow-plow drivers and guys who buy abandoned storage lockers. The latest non-college-degree career field to land its own reality show? Tow-truck drivers.