"In what month does a woman begin to look pregnant?"
"September!"
and Richard Dawson loses it... as do I.

More bloopers:
http://www.youtube.com/watch?v=97G5mMI3hLM
Some real gems in there... including shoes and bras, which apparently people leave on all night.
and more:
http://www.youtube.com/watch?v=aaKEDABSIYw
Apparently people squeeze peanut butter, and a gun kills a lively party. Imagine that! Oh yeah... and a couple of other good ones, LOL

These are just from Family Feud.
