At the moment, it's just initial questions. We looked into Active Reports briefly and liked the formats and visualisations at the time. I think some of the functionality has been incorporated into the standard reports now, for example having tabs for separate pages. Some of the options for sliding date selection looked quite cool in AR, but that might have been included now as well.
When we go to Analytics I'll post some more specific questions...I'm just exploring the art of the possible at the moment.