Tricks daddy posted some 16 Free Wordpress themes, you can 5 of them below. You can click on the name of the theme to see a demo
1. Clean Press
2. Modern Style
3. Moi Magazine
4. Techified
5. TypographyWP v2.0
If you need all 16 themes you can see it here : 16 Free Wordpress Themes That Will Make You Forget Premium Themes