For those "numbers/charts are fun" types, or even those that are "numbers/charts is hard" types, you might find this site interesting:
dshort - Advisor Perspectives
I think this is a clearing house for ideas for advisors, so grain of salt folks...
However, there are chart snippets with observations about macro data. I find many of them to be fascinating. I found this one to be very interesting:
Estimating Future Returns: New Update
If you go to the first link and scroll around, basically you can click each of the articles and in a few paragraphs and one or two charts they present a macro-economic/investing observation and conclusions.
While I'm not sure of the investing value, the mental stimulation/entertainment value is high for me.....