If you're going to comment mentioning it, you should probably tell people what it is :)
For those who haven't seen it, Nightcode is a new, open-source Clojure and Java IDE written by the person I'm replying to. Has project templates, paredit mode, REPL and CLJS build integration. I only played around with it for 5 minutes and went back to Vim, so I can't really endorse it but it looks cool.
There were a couple of mentions of Nightcode in the 'other' field, more than votes for environments I did include in the main listing. I'll do my best to remember to add it next year and drop those that fared poorly this time around.