Well, here's the upgraded version of the original "Tantrum" (old version: [link]
I couldn't enter an emoticon submitted in the past in the contest, so here we go! I basically made the animation smoother with a couple more frames, and shaded it a little better. The smoke coming out changed entirely so the emoticon could be smaller!
Update: I only realized now it's animated slower in Explorer. In Firefox, this is animated at 0.05 seconds per frame!