One way to make sure your poster gets noticed is to make it as weird and disturbing as possible. Brian Noyeswatkins (of Tomten) has succeeded. I prefer to think these guys are singing a three-part harmony rather than crying out in despair, which, considering their predicament, seems more likely.
Got a great poster we should consider for Poster of the Week? Send a high-resolution, color .jpg (no more than 1MB) to email@example.com. The event your poster advertises must be at least 10 days in the future in order for us to consider it.