OBIEE supports Custom visualizations to tailor fit the requirements of Developers and end users. Many versions of OBI SampleApp include various examples to showcase these custom visualizations.
In OBIEE SampleApp V607, this capability of OBIEE to support Custom visualizations is taken to next level: Now, OBIEE supports cool new visualizations developed using Oracle JET Libraries.
Take a look at this video to see how JET Visualizations look like on OBIEE Dashboards:
For more Information on Oracle JET: Click Here