I thought "on the fly" reports was on the wish list, but I didn't find it, so I'll add my comment here.
A sample of the type of "on the fly" report I'd like to be able to save and run . . .
We highlight on a map the states/provinces/countries where our members are located. Right now it looks like I have to export to excel and then do a database sort to get a list of current countries and states/provinces. Once I get it to excel, it is quick. Would be so much nicer to be able to use the members database to show the current members, then select the country and state/province field to run a sort.