All summer long, television viewers within Charter Communications' sphere of influence have been subjected to the unadulterated horror that is this Charter Spectrum commercial, which features a beat-boxing man and three other actors literally singing the praises of the cable giant. It is absolutely wretched, the advertising equivalent of a war crime, as anyone who has seen it will readily attest.The spot opens on the man you see in the photo above, a relatively handsome fellow with a well-sculpted coif and a nice button-up shirt.…