JT Olds writes "Apparently George Mason University is running a project to document differences in speech and accents from different backgrounds and the like. They have a paragraph that 306 sample readers have read and recorded, and all of these sound files are categorized by background, gender, age, and other things. They say that this is primarily for teaching and learning, and is especially useful for any linguists out there, but I just thought it was cool. The sound bytes are released under the Creative Commons license. Of course, the Google cache of the main frame is here. As a side note, I did get the link to this from Penny Arcade's Jerry Holkins."