“This extension is not only more useless than the cube, but it is also much more hacky.”
A GNOME extension that sets your windows on fire when you close them, plus a Doom melt and a Star Trek transporter beam. The author calls it useless, which is honest. People asked for it anyway, because Compiz did it in 2006. The Linux desktop has spent fifteen years bringing back the wobbly windows it took away.