CodeIgniter is Awesome: Even While Drunk

[eluser]Michael Wales[/eluser]
Yeah - this will definitely become a weekly segment and I am currently taking suggestions for what I should do this upcoming weekend. I'd like to keep them small, teach everything within one episode (about 10-15 minutes), but I could branch out into multiple episodes if need be (that could get funny, me trying to remember where I left off last time).

As for the cussing, I'll try and keep it toned down, but Airman can use some pretty bad language (when you mix in alcohol, it can get even worse).

Here are some of my current ideas, but they all seem like they would take to long:
- To-Do List (Form, Database, Validation, New Sessions w/ flashdata)
- User Authentication (Form, URL, Database, Validation, Session, extending the Controller class)
- File Management (URL, Form, File)

Here are some ideas that seem to be within the right amount of time:
- Creating an RSS Feed (using Derek's tutorial, kind of)
- File Uploading
- Smileys
- Using Unix Timestamps rather than MySQL Date/Time fields

thoughts?