Animutation is actually pretty popular in Japan. Sometimes Japanese netizens would make misleading links to animutations such as Suzukisan and Hyakugojyuuichi in a similar fashion to Rickrolling. In Japan, Hyakkugojyuuichi is considered a classic flash animation much like it is in the west, perhaps even more remembered.
Strong Bad Email: According to Strong Bad, the "Geddup Noise", AKA the sound of Strong Bad getting out of his chair, became really popular overseas to the point that it became a cultural phenomenon and eventually left the show. It currently lives in a house in the Coches mountains, but it still shows up for the occasional celebrity endorsement. Keep in mind this is a sound effect we're talking about.