Small Talk/Presentation

Allo dribbble, I am doing a small talk/presentation at Columbia College in February. Someone brilliant recommended that I pick a topic to focus my entire presentation around. Wow, this is a great idea. Please help me decide on a subject. This is what I've come up with so far. Naturally I was going to just DO #4, but maybe that's too expected. What would you guys ACTUALLY want to hear about at a small talk?

SOS, please help, going to vomit, so nerves.