Qlikview allows rapid in-memory assembly of data (qvd's) from various sources such a database, flat files etc to produce nifty, integrated reports, it appeals a lot to the business users who get a fairly quick answer to their questions.
Very easy to use and user friendly from a business user perspective as data can be shown in charts and diagrams which is helpful for high level executives.
Easy to install and setup from an administrator's point of view.
If setup in the right way QlikView can be a dream tool for reporting for your organization especially for the business. It's easier and faster to use. A simple laymen can also use QlikView without any prior tool knowledge.