Megatron's alternate mode is an alien tank. This combines events from The Transformers: The Movie (he was resurrected as Galvatron, whose alternate mode was a tripod laser cannon/pistol and later an Israeli Merkava tank) and the 1980s Transformer comics (he was resurrected as a tank).
John TurturroJohn Turturro was allowed to climb the pyramids during filming in Egypt. At one point, he simply broke down crying. When Michael BayMichael Bay questioned him, he said, "You just don't get to do this in movies. You don't get to shoot in a place that's 4000 years old."
The Forest Battle and Operation Firestorm were shot with IMAX cameras. Because of the increased resolution, it took ILM animators 72 hours to render one frame of those scenes.
Neither the University of Pennsylvania nor the Princeton University are named in the film. Both schools' felt that the Judy Witwicky scenes were damaging to their image.
Megan FoxMegan Fox cannot ride a motorcycle. When she shot her riding scenes, someone had push her so that she could get a good start. When shooting ended, someone was always on hand to catch her bike (not always successfully, with the high-speed chases).
Steve JablonskySteve Jablonsky brought in his mentor Hans ZimmerHans Zimmer and the rock band [?] Linkin Park to assist in composing the musical score. The trio collaborated on making a musical score set to the band's song "New Divide."
It took 140 terabytes to process the CGI for all the robots in this film.