I really enjoy looking at a beautiful ad with a special and different style! It is not always the idea behind the ad that draws my attention, sometimes I notice an ad only because I love its illustration.
I do not look at an ad as a simple consumer, at least not since I've decided to learn more about what happens "behind the advertising scene". So I want to share with you some of the prints whose illustrations I like! Hope you will find them interesting too! 
Source: www.adsoftheworld.com
http://www.creativebloq.com