Yeah, I too am pretty sure it's not parsley, at least not ordinary parlsey, but, I was thinking to myself that the leaf structure does look like parsley. Now, if I were in Texas, where everything is said to be big, this thing being parsley would make more sense... :)
Thanks for the input anyway. This thing, whatever it is, has grown an additional foot just in the past few days. It within an inch or two of beign as tall as I am.