What Now /prog/?

Visual F#

F# is a programming language that provides support for functional programming in addition to traditional object-oriented and imperative (procedural) programming.

http://msdn.microsoft.com/en-us/library/dd233154.aspx

If I ever wanted to write some O'Caml and need to use .NET as well, I'll take it into consideration over C#. It's a good idea, but I haven't had the need to use it yet.

CL/C/x86 asm is what I use on a day to day basis. C# once in a rare while. I've learned ML/Caml before, although I can't claim to know the OO part of O'Caml.