No production company or network will "request" a sizzle reel or demo; you must go into the pitch with a fully produced, ready-to-go sizzle. Which means you must convince your crew to work for free… or fund them out of your own pocket.
In today's world of the Internet, online media, and social networking, being your own publicist is easier than ever (which doesn't mean it's "easy," per se… it's just easy-er).
Every good comedian needs to bomb at least 100 times.
When people are super-proprietary over ideas they pitch, and they think it’s the only one of its kind, A) they’re wrong, and B) it feels like amateur hour.