Ahh.. the bane of my existence, DasBlog.  The theme that I am using right now was completely broken in IE7. There was a simple CSS tweak to make it actually render correctly.  So, anyone using Project84Grass, here ya go:

#container{
    height:auto;
    min-height:100%;
    /* Details Elided */
}

There ya have it.. change the height to auto on the container div..