While you were busy eating your Captain Crunch and sitting around watching Transformers in your Underoos in the 80s, Peter Cullen and Frank Welker were busting their humps to make sure that you had the finest in children's programming as the voices of Optimus Prime and Megatron, respectively.
Gamespot has reported they'll be back at the grindstone for the upcoming Transformers: The Game, due this summer for pretty much every system on the market. The site also features in-depth interviews with Cullen and Welker to mark the occasion, where we get some insight into how the two voices were created. Needless to say, it's more involved than you probably imagined. Before you click, be aware, the voice of Optimus gushes quite a bit about how talented the guy voicing Megatron is so, if that's going to ruin the series for you (or make it harder to enjoy the latest Transformers fan fiction), you may want to pass.