We're discussing oo-functional hybrids here, but I wonder, how many languages actually qualify for this name. Scala, Clojure, F#? Any more?
It'd be great to get one such language per answer, and a little explanation, why you think it is oo-functional hybrid.
Common Lisp. The functional aspects are quite evident, and, on the other hand, CLOS is the mother of all object models.
Objective Caml - as functional as any language from ML family is, but as the name implies, also has a well-developed (and somewhat unique - the only fully structural one I'm aware of) OO system.
Smalltalk. I'm sure many will disagree, but I think that the language that not only had first-class functions, but used them so heavily that even the most fundamental constructs (such as if/else and loops) were implemented as function calls taking function-type arguments, deserves the label "functional". Besides, you list Ruby, and most of what it has in FP department, it inherited from Smalltalk.
Nemerle is (unfortunately) not so widely known functional-OO hybrid designed to run on the .NET platform. What makes Nemerle interesting is its versatile macro system and powerful type inference.
O'Haskell, which is basically a Haskell with object-oriented features bolted on.