With my background of using Business Intelligence projects in large and medium size enterprise applications, I looked at how Xcelsius integrates with corporate intranet applications. 

From my perspective, the main question is:  can it integrate with SharePoint easily?  The answer I found was, no.  In the future, it looks like they will have a release that integrates with SharePoint on the drawing board, but the Workgroup version only has a publishing option for PlumTree.  See Figure 3.

Figure 3:  Exporting Options

So, the current way Xcelsius could work in the enterprise would be to set up a share on the web server, giving the user appropriate rights to that share.  Not the ideal situation in my opinion, but that looks like the way this would be done.  For SharePoint sites, you probably could publish to a document library or something, but I would think you would want the dashboard as a web part.  So the share on the web server looks like the best option.

For the future, it looks like Crystal is developing a version of Xcelsius that will work with SharePoint.  I did find mention of this in a news release, but there was no link to the actual product.  So it looks like that is in development.

The users of this product, in my opinion, are going to be analysts in financial or other departments (in the enterprise).  These users are going to want access to data using existing Excel spreadsheets or connecting through the custom web services that connect to their corporate data stores.