Here’s a list of interesting events on the topic of virtualization or cloud computing that you might want to check out:

IDC Virtualization Conference 2008 Netherlands

Venue: Radisson SAS Schiphol Airport, Amsterdam, The Netherlands (Europe)
Date: 10 September, 2008
Event website

Virtualization Congress

Venue: ExCel Centre, London, England (Europe)
Date: 14-15-16 October, 2008
Event website

Virtualization Conference + Expo West, California

Venue: Fairmont Hotel, San Jose, CA (United States)
Date: November 20-21, 2008
Event website

Virtualization Conference + Expo Europe, London

Venue: London, England (Europe)
Date: January 26-27, 2009
Event website