Well.. I succumbed to the marketing pressure and installed IE 8. First thing I did was start checking my sites against it.
My blog seems to work just fine. I did not find any apparent issues with it.
I have a couple other sites I have worked on and they were all ok. These were a peppering of CF8 sites that used JQuery, and EXT.
Then I got to the CFHOUR.com site. The site loaded just fine and the layout was correct. The windows for comments and subscribe loaded fine. The site appeared to work as expected.