Let's Make a Distinction between "regular" Google products and Google Apps 

• Big "A" Apps and little "a" apps.
• Google Apps
• Google Apps: Education Edition
• Features
• Gmail
• Calendar
  
• Google Docs
• Google Sites
• Groups
• Mobile
  
• Even more in the Google Apps Marketplace
• Moderator
• Aviary Design Suite
  
• Benefits and Potential Concerns
• Integration with existing systems
• Bboogle (Blackboard + Google Apps)
  
• Integrate Google Apps with Moodle!