I've tried to resist the temptation to blog about this, but as you can read I have given in.  Forbes.com has a slide show of 10 Best-Selling Popeil Inventions.  If you want to see more another slide show Businessweek.com also has a few.  Who is Popeil?  Let go to the Wikipeida!

Ronald M. Popeil (born May 3, 1935 in New York City) is a multi-millionaire inventor, well-known for his company Ronco.

He is known for saying, "But wait, there's more!" and "Now how much would you pay?" Each phrase followed the addition of another item or feature to the catalog of a product's advantages or attachments. The advertisements frequently answered the "how much?" question with potential prices, followed by the dramatically lower actual price.

Below is a 1970 Popeil advertisement, the Popeil Kitchen Magician can be yours for only $9.95!