If you have QlikView server, you can view the AccessPoint on a page-viewer tab within SalesForce, so that it looks integreated. SalesForce Setup > App Setup > Create > Manage Your Custom Tabs. Use a Web Tab, with the URL set to your AccessPoint.
It looks quite neat within SalesForce, but isn't as tightly integrated as I'd hoped. I want to be able to use QlikView objects as SalesForce custom objects. E.g. within an account on SalesForce, have a pie chart (actually an object within a QVW) which "selects" (within QlikView) the account you are on, and then tie in other data filtered to that account, perhaps from another (non-SalesForce) database.
That's what I'd really like to do - you too I guess?