Michael Bay has released the full two-and-a-half-minute Transformers: Revenge of the Fallen teaser reel screened earlier this month at the annual ShoWest conference in Las Vegas. What does it contain? Well, there's über-hottie Megan Fox... changing her clothes. That only takes like 10 seconds, so there must be other stuff in the clip too, we think. Oh yeah, there's Bumblebee crying and some heavy robot-on-robot fighting action. Take a look for yourself and keep this question in mind: Why would a character as hot as Megan Fox be into Sam Witwicky? We think she's using him to get to Optimus Prime. Follow the jump to watch the footage. Thanks for the tip, Tap!