Eternity by echo; Chaos by Omar; Azul and Breeze by Teschio (http://www.mindland.it/, great themes); [noir] by [morph]; tenebrae by Maestr0. Eternity is the one I always come back to when I need a break from the others. Chaos, [noir], and tenebrae are great for development purposes btw, if those themes still work after you hacked around in the sources you usually know you've done it right. ^_^ The ultimate stress-test is LDE(X) though, I'd also like to use it more often but you can't take it apart and rebuild it as easily as some of the others :\