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