Schulz had a huge influence on the world of cartooning. Even today, Peanuts is carried in more than 2,000 newspapers worldwide (who knew that there were still that many newspapers?!).
Jim Borgman and Jerry Scott, creators of Zits, say that they often put the zigzag pattern of Charlie Brown's shirt onto things in their strip: cereal bowls, lampshades, etc., to pay tribute to him. You may notice how often that motif appears in the work of other cartoonists as well.