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.
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.