I was pleased to discover the #CSS IRC channel the other day and I’ve just learned that there’s a #Prototype IRC channel for discussing the Prototype JavaScript framework and the script.aculo.us effects library. (Sweet!)
For what it’s worth, I was actually looking for a general DOM Scripting IRC channel at the time, but I was delighted to run across this once since Prototype & Script.aculo.us are the two libraries that I’m actually using at the moment. Anyhow, the channel is #prototype on irc.freenode.net; or, if you want to try connecting to a different server, Freenode has several others from which to choose.