[EwanToo]

A couple of thoughts:

Is Javascript really the language to use when you're seemingly trying to talk to non-developers - either small business owners or business analysts at larger companies?

I can see lots of uses for Ragic, but I don't know any business analyst types who'll just knock out some Javascript code to do a function, when they're fairly happy to use Visual Basic for Applications.

Finally, your samples all seem relatively small, which is understandable, but you don't mention how large a data set you can cope with - a lot of Excel based apps now seem to have 100,000s of rows of data (which is why they end up so slow).