Here's to hoping that Planner get's the attention it deserves from both Microsoft and the community. Sometimes, simplicity brings great benefit. This is an excellent addition to the Office365 product line and it's already well received in my org and it hasn't even been officially introduced. People love it. Instant productivity tool that actually works out of the box without a lot of training. My first plan was a personal Kanban board and it works great for that. Three buckets: Waiting, WIP and Success (your buckets may vary) and a great way to visualize workload/workflow without all the sticky notes. Already tried it out on a large touch screen and will be displaying on a Surface Hub for a group to show them how to work with Planner in a team environment.
Have been using it in a group for activity tracking and social media/communications planning.
Dave - I was at Ignite but didn't see much about Planner (certainly may have missed) so I hope there is more Planner activity planned for the next Ignite. Even if only hallway sessions or similar to generate more buzz.