During the climax of DOTM, Sam witwicky killed Starscream with a weapon given to him by que. To me; it was pretty FORCED on unattainable levels because in the last two movies, they had no real acquaintance whatsoever. Megs, Barry, Frenzy, Scalpel, and Rampage are the only cons Sam had any contacts with. Killing Laserbeak would've been enough. If you asked me, Starscreams death was a pure waste because he's punked Bumblebee and Ratchet in the 07 film and it wouldve provided a great impact if the tables had turned on him in the final act of DOTM while trading insults with his adversaries.