7. Original Transformers Sound Effect
Paramount PicturesOne of the coolest things about the classic Transformers from the cartoons is the noise they make when they transform: the repeating synthesised sound is at once incredibly soothing and awesome-sounding, and as such it's been sorely missed in Bay's Transformers movies to date. Still, Bay did us a solid by including it once when Optimus Prime meets up with his robot buddies and begins to transform his dirty vehicular form into something new and shiny. As Prime drives along, we see the Autobot logo protrude out of his grill, at which point the iconic vocal signature plays out, and Transformers fans everywhere had the hairs stand up on their necks. If Bay was smart, he'd just start using this sound effect rather than the metal-clanging noise he's opted for so far.