Sorry, my photo didn't upload. Here it is.

I read this post further down (http://forums.gardenweb.com/forums/load/weeds/msg041954384899.html?3) and the plant I pulled seems similar in a few ways. There is a purple-flowering vine over my neighbor's fence (in the back shady area in the most recent picture). I'll get a pic of those vines and try to have them ID'd and see if the suckers match the description. Thanks, floral_uk... it does appear to be a sucker based on the horizontal root. What threw me off was that it's so far out from anything that looks like it, and there was also a sizeable sucker in the crack between the wall of the house and the concrete.

With flowers that small maybe you have Galinsoga. Mayweed (Anthemis cotula) and various Erigeron species (Fleabanes) are also common in NJ but they've got bigger flowers. WW Here is a link that might be useful: Galinsoga

I live in Nebraska. I got a lil help from someone on another site and he says it is Tall Fescue. It sort of makes a circular pattern as it spreads out. From what I read/see on videos it appears to be an ok grass, just not the normal grass that comes in a personal lawn. Only way to get rid of it from what I read is to dig it up or spray with Round Up.