Don't tell Snooki, but it looks like the end of reality TV is near. At least, that's the opinion of one network exec.

"I think we've probably exhausted 80 percent of reality," NBC Universal Television Entertainment chairman Jeff Gaspin, who once headed up reality programming for the peacock network, told the Wall Street Journal.

Blame it on over-saturation. Since scoring huge ratings with megahits like "Survivor," "American Idol" and "The Bachelor" a decade ago, the networks have created endless variations on the same formats, racing to get them on air whenever they need a ratings boost.

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