I did some editing in /templates/vb3enhanced/thumbnail-filmstrips.tmpl and fixed all missing end slashes in img src's, and added any missing alt tags.
Also removed the "height" tag from the first table code.
Now I am down to ONE SINGLE error here: http://www.wtf.com/gallery
Maybe that has to do with that reported bug of the second occurance of the stylesheet showing up in the source code. If you look at the description of the error on the validator site, it's simply an 'already defined' error. Once that's fixed, my index should 100% validate WITH all the code I have turned on! Woo!