Following are upcoming cloud computing -related events. If you know of other events, please provide a link and any additional information in the comments and I will update them.
CloudConnect 2009 - January 20-22, Mountain View, CA
Cloud Camp Atlanta - January 20, Atlanta, GA
Cloud Camp Singapore - January 21, Singapore
Cloud Computing Innovation Day - January 27, Santa Clara, CA
Cloud Camp Indianapolis - January 28, Indianapolis, IN
Powered by Cloud - February 2-3, London, UK
Open Group's Enterprise Cloud Computing Summit- February 3, San Diego, CA
Open Group's Security Practitioner's Conference - February 4-5, San Diego, CA
AWSome Atlanta Cloud Computing User's Group Meetup - February 9, Atlanta, GA
5th Silver-lining Meeting – The New England Cloud User Group - February 10, Waltham, MA
Cloud Computing: An IT Paradigm Shift - February 11, Toronto, Canada
Cloud Camp Toronto - February 11, Toronto, Canada
Ahead in the Clouds - February 18-19, San Diego, CA
CloudCamp Federal at FOSE - March 10, Washington, DC
Cloud Camp London - March 12, London, UK
Cloud Computing Expo New York - March 30 - April 1, New York, NY
Cloud Camp Minneapolis - April 18, Minneapolis
Cloud Slam 2009 - April 20-24, online conference
Under the Radar: Cloud Computing - April 24, Mountain View, CA
Enterprise Cloud Summit (part of Interop Las Vegas) - May 17-21, Las Vegas, NV
Velocity '09 - June 22-24, San Jose, CA
Structure '09 - June 25, San Francisco, CA
