Pilea Peperomioides

Chinese money plant.

That guy's ↑ a bit silly, talks too much, and his plants are tall and spindly, meaning they don't get enough light. Plus he can get $15.00 each for his baby plants. 

eBay

Amazon

Etsy

This guy's ↓ more to the point.

I like 'em because they're weird. Like Dr. Seuss plants.