This is EXCELLENT advice, as this process is often neglicated due to the need to start the next project right away.

Article: 10 things you should do near the end of a project
http://blogs.techrepublic.com.com/10things/?p=351

QUOTE: In either case, you probably go through the typical inception, elaboration, and construction phases of a project. But when it comes to the end of a project, many project managers come up just short of the finish line. Failure to handle the final steps can add confusion to an initiative and may lead to customer dissatisfaction, unhappy staff, and a project dragging on longer than necessary.

#1: Finalize testing
#2: Finalize training
#3: Validate deliverables
#4: Get project signoff
#5: Release the team
#6: Analyze actual vs. planned
#7: Archive documentation
#8: Ensure contract closure
#9: Conduct a postmortem meeting
#10: Perform a self assessment