Answer: The Observer

While it isn’t unheard of for a sci-fi character to make a cameo appearance in another sci-fi television show, it’s almost entirely unheard of for sci-fi characters to make appearances in non-sci-fi television programming.

That is, unless, the character is The Observer from the Fox sci-fi series Fringe. As part of a subtle but far-reaching promotion for the popular sci-fi series, Fox inserted The Observer—a mysterious and very easily recognized character from the series—into dozens of situations across their networks during 2009 in a bid to link the storyline of the show with our own timeline/reality. The Observer was seen in the audience of American Idol, at a NASCAR Sprint Cup race, and watching the 2009 Major League Baseball All-Star game, among other appearances.