I once came across a nifty little diagram that had all the Arkham Horror expansions on it with lines drawn between them showing which ones worked well together.
For the life of me, I cannot find this diagram (even though I am certain I had it printed out before). I've trawled google for the past couple of days but cannot find it. I'm starting to think that I might be going mad and just imagined the whole thing!
Help appreciated! =)