Find a beginning to intermediate level tutorial from any of the following links or another tutorial site or podcast and prepare to give a 5 to 10 minute teaching demonstration to the class. If you find another site or particular podcast that you recommend, please provide the link to the rest of the class.
Absolute Cross - a rich selection of high quality tutorials, resources, and imagery to help you on your way as a web developer.
Adobe Photoshop Features - Here's detailed information about the features and capabilities of Adobe® Photoshop® CS5, direct from Adobe.
Photoshop CS5 Learning Center - Tutorial videos from the National Association of Photoshop Professionals (NAPP).
Eyes on Design! If you're interested in graphics and design, and you want to learn some neat Photoshop techniques, you have come to the right place :)
Have a look at the various tips and tutorials at AdobeTV and at the Adobe Design Center.
MyJanee.com - Photoshop Resources and Tutorials.
Download a PDF sample chapter from Photoshop CS4 for Nature Photographers: A Workshop in a Book by Ellen Anon or a one from Tim Grey's Photoshop CS4 Workflow: The Digital Photographer's Guide.
Photoshop Cafe- Photoshop tutorials and resources.
Digital Retouch - the supplemental web site for the book Photoshop Restoration and Retouching by Katrin Eismann (does not cover CS3, 4, or 5).
Another option would be to head over to Digg.com and search for "photoshop CS5 tutorial." I suggest sticking with the links with the most Diggs. Another resort would be to do an internet search for the same phrase - but good luck sifting through the immense number of options you will be provided with.