I was a little bored to do heavy duty technical stuff, and ended up doing this small thing. But it is interesting and worth the time spent.
The following steps demonstrates how to replace the SAP logo in top right hand corner with a dancing penguin. If you look at the penguin image in paint you will see that it is basically a collection of slightly different still images next to each other. Therefore if you have got the time and patience you can insert any moving picture you want.
1. Open field directory C:\Program Files\SAP\FrontEnd\SAPgui\themes\HighCont
2. Rename file sapalogo to sapalogo_tmp
3. Right click on the following file and select ‘Save Target As’, save to above directory
4. Repeat for directory C:\Program Files\SAP\FrontEnd\SAPgui\themes\enjoy