OBIEE is used by Kaleida Health as a "Flu Dashboard" and interestingly they could save a lot of time in getting the data at the right time.
Sometimes dashboards are really useful that it makes life simpler.
At job I use Oracle Application Express to build dashboard. One such dashboard is with traffic light which indicates the status of data load for different regions. Converted all complex queries into meaningful symbols and everything in one dashboard.
Now the Dashboard in APEX is used by the full team to know the status of the jobs. We do have dashboard for other purposes like handling errors in the dataload , monitoring discoverer usage and portal usage.