"Teddy Spirodakis"
1I believe the killing of Teddy Spirodakis was meant to foreshadow Tony's own demise at the end of the series. They have the same initials and their names are vaguely phonetically similar, they're both fat, they both die while eating. Also, just after Gene kills Teddy, we see him rubbing a spot of blood off his face, then smearing it across a map of New York - this has to be foreshadowing the war between NY and NJ.
Taps, lights out, 2200 hours. What's missing? Give up? Television.