Blu Ray Presentation

[jbute2k2]

I am currently working on an independent study and the topic is Blu Ray. I need to have a presentation to give to a group of about 100 people. I am wondering what you all from here think I should include. I am planning on going into the advantages of the format, differences from dvd, and all that jazz. Also planning on looking Blu Rays impact on the home entertainment market. I would like to show some screen shot comparisons from VHS->DVD->Blu Ray of the same film and preferably the same screen shot. Does anyone have any ideas on the best way to go about that? I see screen shots on here daily but never comparisons so I was wondering if anyone had any (hopefully). Any suggestions, comments, or ideas are MORE than welcomed. Let me know what you all think. Thanks.