The world of primetime TV are primarily set in the real world. The real world based on the fiction they create. So, Law and Order -- in all its incarnations -- is set in New York City, but it's not the real five boroughs. The newspapers they read are not The New York Times, the Post or the Daily News. For contemporary TV fiction, reality is on the margins of the storytelling because you can't really set those characters in a real world. However, when the two worlds intersect, the results can be magic. Here's 8 big-time, primetime examples:

1) Cowboy Up Time
Remember the episode of Lost when Ben wanted to convince Jack that he was in communication with the world outside the island? To prove that he was telling the truth, he showed Jack a video of the Boston Red Sox winning the world series in 2004. You can't get more real than that, right? And yet it was used in one of the most out of this world shows on the air. In fact, using Lost's own terminology, the Red Sox video is a constant truth in a universe that's a complete fiction.

%Gallery-19047%