On this page, we collect a few presentations that have been given on the development of deal.II as well as the use of the library for applications. Some of them are quite nice and colorful!
We would be happy to host other presentations here as well. If you have one that you gave on an application of deal.II, drop us a note and a pdf file.
Some other resources on the use of deal.II or its development can also be found on a page where publications are collected.