Road to the Multiverse

"Road to the Multiverse" is the first episode of the eighth season of, and the 127th episode overall. It first aired on September 27, 2009.

Synopsis
"With the help of an out-of-this-world remote control, Stewie and Brian travel through alternate universes, including a post-apocalyptic world, a parallel world run by dogs where humans are pets and a "Robot Chicken"-like existence."

- The Futon Critic