Duplicate taxonomy terms from view So I haven't yet been able to find a solution to this without using a preprocess function to check for duplicates or just using the 'tagadelic' module.. it'd be nice to get some closure. 

How do I configure a (block) view to only display a list of terms for a vocab, each term displayed once (maybe followed by a number indicating how many times it's used) - even though the term may be used by multiple nodes? 'Distinct' doesn't do the job.. Fields 'Taxonomy:All terms' and 'Taxonomy: Term' both yield similar duplicate item when the term is reused by another node.

It's a fairly basic request, I'm sure I'm missing something but can't find a solid answer for dealing with it in views
I think you're using a Node view instead of a Term (Taxonomy) view. So you're pulling in nodes and getting the tags associated with them. Since multiple nodes can have multiple tags, you're getting duplicates. I think the "Distinct" doesn't work because it's checking the Nodes to make sure they're distinct, not each field you add to the view.

So instead, try creating a view and choosing the Term type, instead of Node. I put together a very simple view without even using Distinct and I have no duplicated values, even though each term is definitely used on more than one node.

I don't know how you would do the count next to each term using Views, but I know the Advanced Taxonomy Blocks module does this.