I'd show the most important for that novice user mode.
For example, when I show Emacs to my friends at the faculty of physics, I show them AucTeX with preview-latex and RefTeX. Also iMaxima is great.
If I have to show Emacs to software developers I show them something like JDEE or Python mode with Ropemacs.
Tetris, tramp and w3m can be used to give the idea that Emacs can do everything :)
Then I'd show how to start the tutorial and give link to EmacsWiki.org
