The new clojure-maven plugin with REPL and swank support is picking up momentum. Now it has a mailing list (via @talios)
Enclojure's REPL is not just for Netbeans (here, via @ffailla) -- If you still haven't given a test to Netbeans+Enclojure, it's time to do it. The REPL support is excellent and this article describes how it is done. Netbeans is not too shabby as a clojure editor either.
Nü Echo has a clojure interface to NuGram Hosted Server. Time to make clojure talk? (here, via @nugram)
Generating Clojure code from an RDF ontology (here, via @stuartsierra) -- A nice example of metaprogramming