Well not really for fun since the basics of VM integration are listed on the CIPT1 exam blueprint!
I decided to integrate the CUCM7 cluster with CUC7 tonight and man, I had no idea what I was getting myself into. I ironed out all of the bugs and everything is running great now but it was WAY more work than I anticipated! So much for a quick "hmmm, lets add some voicemail ports"!!