Qwest did the same thing to UTOPIA in Utah and delayed construction for 18 months. They thought they could assert ownership over the power company's poles and refuse to allow UTOPIA to use them. (Yeah, I can't explain the "logic" either.) In the end, they lost the case and won some of the war by forcing UTOPIA to refinance their bonds and put them in a situation where they'll have to call city tax pledges anyway. UTOPIA will still be able to make bond service in a few years, but now they have the PR black eye of having to collect tax money to make it happen.

You missed the most obvious one: kudzu, that vine that covers the entire South and chokes out all native vegetation in the same of stopping erosion. On the plus side, it does make for some good jelly...