Update 1: The dog.
So, here is the plan I formulated, after reading everyone's input (and thanks, by the way. I needed your indignation and facts to spur me on!):
At Meijer the other day, I was intrigued by a sale on an item called Poop Patrol. Poop Patrol is a black and purple plastic pooper scooper, and it was on sale for 9 dollars. After consulting with my neighbors during a lasagna dinner (Laura and Ashley, it was awesome), I purchased said item, dolled it up with a bow (white ribbon with gold trim and purple butterflies, naturally), typed up a letter and put it in a card envelope, and on Sunday placed the gift on my neighbors' porch addressed "M's owner, roommates, and residents of 334." The letter touched on the issue of poop in the yard, this being illegal, and our desire simply to have this cleaned up, rather than getting the law or landlords involved (though I did email my landlady and tell her what I did). I peeped at the porch periodically, and by yesterday it had been taken in. The poop is still in our yard (and fortunately, no fresh piles, only decaying old ones), but I feel that I have done my best, in a classy fashion, to help get our yard cleaned up. I thought it was pretty clever, actually. Fingers crossed. Beyond this, I think the landlady is simply going to have to clean it up, or get Greenbriar to do it.
Update 2: The Mist
So, I wrote a while ago about how I was disappointed by The Mist. I read the trivia on imdb about it, and learned that the ending was made up by the director, and that Stephen King wished he had thought of it. I checked out the ending in an anthology entitled Dark Forces today, and I will say (particularly to Mrs. White) that it is worth reading the last six to ten pages or so to see the original ending, the ambiguity of which I enjoyed much better than the pointlessness of the current ending.