Email forwards - use at your own risk. Most of the forwards I get are urban myths from my aunt saying Starbucks hates the troops or toliet paper causes cancer. Every once in a while, there's a rare gem worth telling other people about. Adam McKay forwarded these to me - 9 Amazing Ads from the 30s. These are real. And they're so awesome, they're worth telling you about.
Which one is your favorite? I like "Eat eat eat and always stay thin. How? with sanitized tape worms!"