The airbags can explode unexpectedly and cause serious injury or death by flying shrapnel.
Honda has the most models affected but the list also includes: BMW, Ford, Subaru, Toyota, Nissan, Infinity, and Mazda.
Pretty good article with links for more information.
http://jalopnik.com/your-guide-to-the-explosive-airbag-recall-that-effects-1634598717
Hondas official release.
http://owners.honda.com/Documentum/Recall_Press/Recall_Press_Release_0000134.pdf
Sorry the links aren't hot.... Stay safe out there, Bear