You may wonder what took Google so long, but you can now set AdSense ads to a custom font. You can only choose between Arial, Times New Roman, and Verdana at the moment (and this is restricted to Latin-character languages, Google notes in their blog post ).
Don't have an adsense account.. But Ive seen that already through my sister's adsense account. And yes, its not new to me as well.. But thanks for sharing!