I seem to recall a thread here, lo, these many moons ago, in which we polled to see who was the hottest cartoon babe of all time. Certainly I remember voting for Erin Esurance, the animated mascot character from those sprightly 30-second online insurance spots. Here's the story of how she came to be (inspired by Jennifer Garner on Alias, apparently), and why and how she vanished:
http://priceonomics.com/how-esurance-lost-its-mascot-to-the-internet/
http://priceonomics.com/how-esurance-lost-its-mascot-to-the-internet/