Volta is a super idea - injecting javascript into html via server-side controls, only slightly more specific and (well) type-safe (or something thereabouts).

Most notable introduction or post on Volta I've seen is the post Drew Marsh, which pretty much sounds like more elegant solutions to age-old problems than those I've seen previously. I'll be eyeing this one more closely soon. I'd love to see (or do) some implementation using this with the new Graffiti CMS tool that went into beta this afternoon.