Zamioculcas, Common name "Zanzibar Gem") and it is tauted as the plant you can ignore. I have had mine for six years. Originally I bought it for one of the Carnegie Center galleries where we had so much to do we needed a plant that didn't require too much attention. So we had rubber plants and philodendron and then the ZZ plant. It was perfect!
Since it had gotten use to art, it needed such a corner in my house.
And there are Zs galore this week at ABC Wednesday. And they will not put you to sleep!