Trivia: When the Autobots are driving up to the spaceship as they are about to leave Earth, the music that is playing is a variation of "Arrival to Earth", the music that played when the Autobots first arrived in Transformers.
Trivia: The film contains several references to the 1980s animated series. The basic plot of the Decepticons enslaving humanity and using a space bridge to bring Cybertron to Earth was used in the three-part episode "The Ultimate Doom." Megatron sits in the chair of the Lincoln Memorial in "Atlantis, Arise!" And Optimus Prime's battle axe was first seen in "More Than Meets the Eye," the three-part debut of the animated series.
Trivia: There are two scenes in the highway chase sequence that are taken directly out of Michael Bay's film "The Island". The scene where one of the Decepticons lands on a car's hood and the scene where you see a SUV being flipped in the air when the Decepticons are running. Both scenes are just edited a bit to be part of the Transformers movie. Here's a YouTube video on these scenes: http://www.youtube.com/watch?v=H7kcqB3thJM.
Trivia: Remember Sideways, the Audi R8 Decepticon Sideswipe sliced in half in the opening scene of Revenge of the Fallen? Well, he has a cameo, in which his fate is no more fortunate then it was last time around: He is the one who Optimus Prime stabs in the chest and swings around during the Rage.
Trivia: There is a sound effect which is used twice. It's first used in Revenge of the fallen when Optimus breaks Megatrons arm and shoots him with it. Megatron makes a growling noise during the slo-mo shot of parts falling off his face, after that optimus blasts him through the ancient building. It's then used in Dark if the moon during the shot Just after Sentinel is floored by a rocket from a soldier, he runs away on all fours and transforms into his alt mode and is then tackled by Optimus. During Sentinel's transformation the growling sound effect is used again.