American Dad!

Originally, the character of Klaus was going to be a native of France named François. When Dee Bradley Baker auditioned, he told the producers that his French accent wasn't very good, and that he would read the lines in a German accent instead. Producers liked Baker's performance so much, they decided to make Klaus German.

Early episodes had Roger gradually learn to use disguises to go out into the world; but in later seasons we see that he had actually been using disguises for decades before he met the Smiths.

The Credits end with a Security Guard from Fuzzy Door Productions waving and saying "Bye, have a beautiful time!"

Up until the '08-'09 season, the opening credits featured a shot of Stan looking at a newspaper headline, which would be a joke headline relating to recent events. Episodes shown on Adult Swim have the headlines blanked out, leaving Stan looking at just white space. The credit sequence for new episodes for '08 - '09 eliminate this sequence altogether.

Featured in Family Guy: Excellence in Broadcasting (2010)