Michael implements curried blocks in Cincom's VisualWorks:

I had some spare time on my hands for some unknown reason last night, so I knocked up a way to curry blocks in Smalltalk. It follows the same pattern as value:* and cull:* so it should be immediately familiar to fans of blocks.

As he says, this is an experiment, not a product direction. But, if the topic interests you, check it out.