Learn more about how the Rust programming language shares many of the advantages offered by Haskell such as a strong type system, great tooling, polymorphism, immutability, concurrency, and great software testing methodologies. Rust is a good choice when you need to squeeze in extra performance.
Elegant, instructive examples of functional programming. Supposed to be fun, and teach important programming techniques and fundamental design principles. Traditionally appear in Journal of Functional Programming, and at ICFP and affiliated workshops.
If you read discussions about programming languages, one topic is quite common: "Why do people use an inferior language like Java/C++/what-the-hell and not a superior language like Lisp/Haskell/Python/you-name-it"?