While watching Darren build the makeshift nail gun in Sudden Death, I found myself reminded of a scene from a movie where a guy builds an apparatus for his arm that could make a gun spring out of his shirt sleeve into his hand. I can't trust my memory like I used to, but I'm sure the device backfired (as in the gun flew out of his sleeve and away from him). I know it was a movie I saw for the first time in the last year or so. I hate when this happens.