Trying to keep my promise of learning a new programming language every year, I have identified a couple of candidates for 2007:
Lisp
D
Haskell
Erlang
In any case, I want to get my hands dirtier with functional programming. And also, in the meanwhile, getting used to the new versions of old friends, both bringing new and interesting features:
C# 3.0
Objective-C [...]
