Beginner Gardening: Help me ID this plant before disaster strikes!, 1 by Bluethumb47

Bluethumb47 wrote:
I took a new office job & there are a few plants around my area that no one pays much mind. Not being one to let any thing just die, I became the "office gardener." Every thing seemed to be going just fine for the first 4 months, until this guy's pride leaf studdenly started going yellow (the one in the "back". He was a lone leaf when we met (albeit a big leaf: 27 inches long & 17 inches @ its widest point). Since I've been giving him TLC, 3 new leaves have sprouted from the main stalk, each one bigger then the last (I'm eagerly awaiting the fourth addition to the family). I'm an avid waterer - usually a good watering on Tuesday & a light watering on Friday for the weekend with every third week just one watering for the week. I had noticed that this plant was unusually dry when the yellow appeared and 3 days later was mostly dry again. I've been moving him around to get different levels of sun as well. I have no idea what this guy is & I'd like to read up on him. Can anyone help me?