Do you use wordpress too? Are you more interested in awesome than in hope?
This is not just a plugin, it symbolizes the awesomeness and enthusiasm of an entire generation summed up in six words sung most famously by Dick Valentine: You Must Obey the Dance Commander. When activated you will randomly see a lyric from “Dance Commander” in the upper middle of your admin screen on every page. It can be active at the same time as the original Hello Dolly plugin.
Update on January 14th, 2011: I’ve uploaded a new copy of this plugin that changes the styling back to the original settings. This means you cannot have both on at the same time, but I think it looks better. Here: Dance Commander Plugin – Original Styling