Watch American Dad on TBS.com. Hayley (Rachael MacFarlane) is just trying to find Steve (Scott Grimes) so she can make it to a Shaggy concert, but hopping through alternate dimensions turns out to be a total trip. Luckily, Exposition Lewis (Kevin Michael Richardson) is on standby to explain all the weird multiversal rules... such as why Princess Diana is apparently less popular in every universe where she’s alive. Season 18, Episode 14: Multiverse of American Dadness #AmericanDad #SethMacFarlane #RachaelMacFarlane #ScottGrimes #TBS #Funny #Comedy SUBSCRIBE: bit.ly/TBSSub Download the TBS App: bit.ly/1qBbkMW About American Dad: “American Dad!” centers on super patriotic CIA agent Stan Smith (voiced by Seth MacFarlane) and the misadventures of his unconventional family in Langley Falls, VA. Stan applies the same drastic measures used in his job at the CIA to his home life, where Stan’s blissfully unaware wife, Francine (Wendy Schaal), has an unfaltering loyalty that m...