The most comprehensive list of Black Friday and Cyber Monday WordPress theme deals is at ThemeSorter.
http://themesorter.com/blog/2011/11/25/weekly-roundup-black-friday-edition-23-deals/
There are deals from 23 of the major theme sellers, including StudioPress, WooThemes, WPZOOM, iThemes, MOJO Themes, PageLines and the smaller shops.