“In imperative languages, loops tend to come it just two or three flavors (for, while, repeat). The problem is that loops result type is VOID so the only way to communicate results from the loop body to the outside is via SET!.” — Matthias Felleisen on writing idiomatic PLT Scheme

http://shop.webomator.com/—Especially the retro futuristic stuff. I’m a sucker for the whole Captain Tomorrow/Future from the 1930’s look.