There are hundreds of free WordPress themes available. I also offer WordPress installation services.
Care should be taken when looking for themes as some shadier types have offered free themes laden with Malware that infects site viewers.
The official WordPress Theme Repository offers human-reviewed to ensure no such crap gets included.
This video by Leland from Themelab.com show why using Google to find free WordPress themes is a very bad idea.
Other sources of free WordPress themes
weblogtoolscollection – WordPress Theme Release news
SmashingMagazine – Posts tagged WordPress, 100 free high quality WordPress Themes 2010, 40 free high quality WordPress themes, 100 Amazing free WordPress themes 2009,
HONGKIAT WordPress Theme posts, 41 great looking free WordPress themes, 16 free premium WordPress themes that don’t suck,
THEMELAB free WordPress theme downloads,
Tripwire 60+ Free Clean, Simple Minimalist WordPress Themes, free portfolio themes, 85+ High Quality Free WordPress Themes, 40 Best places to find WordPress themes
Themes - other
P2 Theme suits team-based posting, great for quick & easy posting with ability to post from the front-end