Fair rating?American Dad!· Season 20 · Episode 21
Guardian
Stan uses a mothballed military computer to do Steve's math homework, starting the clock toward nuclear annihilation.
Streaming on (US) 
See all
#6In Season 20of 22 rated episodes
#41All-timeof 399 rated episodes
+0.3vs season avgSeason 20 averages 8.2
2025First airedMarch 17, 2025
Guest stars
Curtis Armstrongas Schmuley "Snot" Lonstein (voice)
Mike Henryas Jackson (voice)
David Koechneras Dick (voice)
Phill Lewisas Duper (voice)Matt E. Mixeras Dr. Weitzman (voice)
Judah Milleras Mertz (voice)
Nic Wegeneras Additional Voices (voice)
Neal McDonoughas General (voice)
D'Arcy Cardenas Programmer (voice)
Toks Olagundoyeas Cashier (voice)Toks Olagundoyeas Secretary of Defense (voice)
Liam McIntyreas Professor (voice)Liam McIntyreas Australian Anchor (voice)
Wayne Bradyas Major (voice)Crew
Tim ParsonsDirector
Brian BoyleWriter
Shows like American Dad!
The closest matches on shared genres, ranked by match strength and popularity.
- 01Comedy·FamilyThe Simpsons1989–presentSame network — FOX·
- 02Comedy·FamilyFamily Guy1999–presentSeth MacFarlane also stars·Same network — FOX
- 03Comedy·FamilyModern Family2009–2020·ABCModern Family revolves around three different types of families (nuclear, step- and same-sex) living in the Los Angeles area, who are interrelated through Jay Pritchett and his children, Claire Dunphy (née Pritchett)…
- 04Comedy·FamilyBob's Burgers2011–presentSame network — FOX·
- 05Comedy·FamilyMom2013–2021·CBS
Christy is a single mom who, after years of questionable choices, is now sober and trying to get her life on track. - 06Comedy·Family·DramaShameless2011–2021·Paramount+ with ShowtimeShameless is a fiercely engaging and fearlessly twisted series.
