What's the one thing you like to show off to non-droiders? [poll]

So, recently I've had a few people join the Android Army.  And if you're not much of a technical person it can be a bit overwhelming.  Even more overwhelming if you're a huge Android geek and want to show them something cool.

When someone throws me their new phone I feel a huge responsibility to show off something amazing and cool and there's always sooo much I could show that I don't even know where to begin.

This is where you come in, and this week's poll.  What is the one thing you show off to a new Android user or a non-Android user to convince them.
So, your friend comes to you and says "hey, I just got this new <Android phone> -- what can I do with it?"

You're on your way back to the office for lunch, so you don't have much time.  What's the one thing you show off?

Here's how you put on a widget... Have you tried this new app... Let me show you how to use the NFC... Don't forget to set up a cloud backup...

There's plenty to choose from, but what's the BEST thing, in your opinion, to show off.