Comment on Electric Sheep

Works perfectly fine in 10.4.7. Make sure your firewall/router isn't blocking the ports that are used to download "sheep" (Electric Sheep uses libtorrent like reconbot mentioned). If you normally have problems with BitTorrent then Electric Sheep might suffer from the same problems.

My favourite screensaver btw. Unlike many other fancy abstract screensavers, Electric Sheep runs really smoothly and the effects are just sweet.