AdSense Now! is the easiest way to start making a buck or two from your blog through Google AdSense. It offers the most straightforward configuration -- no mess, no fuss. And once configured, it displays up to three AdSense blocks in your posts and pages (both new and existing.)
Download: http://wordpress.org/extend/plugins/adsense-now/
Plugin homepage: http://www.thulasidas.com/adsense
Features:
1. Enforces the Google policy of not more than three ad blocks per page.
2. Control over the positioning and display of AdSense blocks in each post or page using custom fields.
3. Simplest possible setup interface -- nothing more than cutting and pasting AdSense code into one text box.
4. Internationalized (English, Spanish, Italian, Portuguese, Bahasa Indonesia and French).
5. Remembers separate configuration and color settings for each theme.
AdSense Now! is a simplified version of the feature-rich Easy AdSenser plugin that does everything AdSense-related (widgets for sidebars, link units, Google searches, options to fine tune etc.) for WordPress.