Most Basic ClojureScript GUI (here, via @devstonez) -- Step by step guide on using Google Closure Lib's GUI from ClojureScript.
Parsley, now with a modicum of documentation. No release though. (here, via @cgrand) -- Parlsey is a parser generator library for Clojure that has some interesting runtime characteristics, one of them being that it is incremental (very useful for code editors, for example.)
Twitter Engineering talks about Storm (here, via @swannodette) -- Since Twitter acquired Backtype (authors of Cascalog) now they have in their hands a ton of clojure goodies. One of them is the upcoming real-time map-reduce-style computation engine by @nathanmarz, named Storm. This article describes what Storm is and how it works. The article makes no mention of Clojure though --I know I know, parentheses scare people off.