Things I like in a programming language

I posted a while back about things I dislike in programming languages, and it was a fairly long list, so in order to appear balanced and not too biased, here is a list of things I like in programming languages (perhaps not all at the same time):

Objects
Classes
Multiple inheritance with traits/mixins
Virtual Classes
Virtual Classes some more (with Tribe typing)
Static types
Dynamic typing
Higher order functions/closures
Readable syntax
Good error messages
Loads of other stuff that I can't think about right now...