One of my favorite groups to speak for (aside from the Baton Rouge SQL Server User Group) is the Hammond .NET User Group at Southeastern Louisiana University in Hammond, LA. A mostly undergraduate crowd of enthusiastic future developers (and perhaps some developers-turned-DBAs, like myself) make for a fun audience that asks great questions.
Here's my slidedeck for an introductory presentation on databases and SQL Server, perfect for a college crowd, most of which hadn't completed a capstone project requiring a database solution. In fact, the first line of the slidedeck details the highly important lesson of how to pronounce "SQL" - as in, "sequel" NOT "ess kew el".
Here's the download link for the PowerPoint slidedeck