The genius behind this campaign is Leo Burnett.
Here is my favorite commercial for this campaign:
It is obvious that one of the reasons everyone loves this campaign is that it is hilarious. It is one of the handful of campaigns (I like to compare it to the Old Spice campaign) that get people excited when their commercial comes on, instead of groaning, and muting the TV. On top of that, I think that this campaign used great creative strategies to promote the fact that their company provides great coverage, instead of just promoting a cheaper price, like most other insurance companies tend to do. What also works is that they show real-life situations that actually do probably happen to people (texting while driving, blind spots, etc).
This campaign, and the actor, Dean Winters, will always be one of my favorites!