From Mike Orzen ( @MikeOrzenLeanIT ) comes a solid post on the 10 wastes of IT:

1. Overproduction
2. Over-processing
3. Defects
4. Over-engineering
5. Inventory
6. Transportation
7. Waiting
8. Motion
9. Unused creativity
10. Technical Debt

From: http://itrevolution.com/the-7-wastes-of-devops/