rlwrap: enable Clojure readline support (here, via @crxor) -- In case you missed it, lein supports both jline and rlwrap. This article discusses how to get them to work on a OSX system.
Reading CSV files (here, via @tebeka) -- Relatively short code snippet that parses through large CSV files without first loading all file into memory. Lazy sequences are your friends.
Another Clojure conj video up! @liebke, "From Concurrency to Parallelism (here, via @clojure_conj) -- This talk is from the creator of Incanter and talks about the upcoming parallelization features for Clojure.