Functional Programming

Peter Norvig's "Python for Lisp Programmers"
Another "comparison of Python and Lisp"
James Edward Gray  "Higher Order Ruby"

Lisp Scripting for .Net
F# ML/OCaml variant for .Net (nice sample here)

First feelings:
- Python is more functional than object oriented (watch-out for lambdas cannot contain statements)
- Ruby is more smalltalk-ish (I found it easier to use than Python)
- Lisp is more readble than ML/OCaml