The concept of retrospectives is well established in the agile community as the way to incrementally improve your processes and the way the team members collaborate during their work. The idea is that by regularly looking back at the past period you may find improvement that will increase the productivity and delivered value.
This concept can also be used in other contexts, for example during a project kick-off at the start of a new project and team. To get the team on track and up to speed quickly it is important that the forming process starts out nicely and that the team learns how to collaborate and get focus on their work. Iterative processes with short iteration lengths helps out here in that the team needs to get focused in order to have a successful delivery after the first iteration. But you can also help out by establishing a common goal and vision for the team immediately at the start of the project. This common goal could help the team establish better collaboration and communication patterns as well as good process and engineering practices from start that will kick-start the project. And to establish that goal you could run a retrospective from the future, a future-spective.