I recently saw a demo of a SAS competitor's BI product. The demo was very good but marred by the fact that the date-based horizontal axis of a bar chart was in alphabetical order and the presenter didn't know how to change it. I dare say it's possible to do it, but the fact that the presenter couldn't do it on the spot suggests the product's interface is not as intuitive as it ought to be.
I was reminded of this faux pas when Angela Hall (author of the SAS-BI blog) tweeted yesterday (coincidentally) how to avoid similar embarrassment with SAS... http://support.sas.com/kb/39/904.html