This summer there are some online PD offerings that teachers may want to take advantage of:

http://learningcenter.nsta.org/products/online_courses/

The trick is to find courses that are rigorous and will leave you with a feeling you really learned something. Here's an article about distance learning that may make it easier for you to evaluate those offerings;

http://www2.honolulu.hawaii.edu/facdev/guidebk/online/web-elem.htm

and another one here:

http://www.andrewkmiller.com/2012/02/three-look-fors-for-rigorous-online-courses/