It's been 25 years since the very first version of "Law and Order" hit televisions, and since then you literally cannot channel surf without stumbling upon a rerun already in progress. Whether it's the original series, "Special Victims Units," "Criminal Intent," "Law and Order: LA," or maybe soon the newly announced "Law and Order: You The Jury" reality series.

But here's the thing about long-running franchises -- at a certain point they've got so many episodes that they start to experiment and go completely off the rails. So can you tell which of these episodes actually aired on real live television, and which we fabricated? Warning: it's probably harder than you'd think.