Ran across a few ways to earn those 120 CPE needed I'd though worth sharing:

Listening to security Pod casts:
http://didierstevens.wordpress.com/2007/01/22/listening-to-security-podcasts-earns-isc%c2%b2-cpe-credits/

Webcasts:
1 CPE per webcast
http://www.sans.org/webcasts/

Conferences
CISSPs earn 1 CPE credit for each hour of attendance at a conference. Security conferences qualify as Group “A” CPEs. Other educational conferences qualify as Group “B” CPEs.

Participating in security forum actively - 1 CPE per hour spent being part of the community

All official and above board :-) From the horse mouth -
https://www.isc2.org/download/CISSP%20Recertification%20Guidelines.pdf