17 Longest Running TV Shows of All Time, From "Grey's Anatomy" to "SVU"

• Seasons: 20
• Episodes: 350+ (Ongoing)

Touching on the absurdity of US cultural norms and standards, "American Dad!" uses humor and complex characters to relate to viewers and entertain them at the same time. Lovers of animated adult humor shows like "The Simpsons" and "Family Guy" typically like "American Dad!" which centers around the life of father Stan Smith, mother Francine, children Hayley and Steve, and their pet fish Klaus.