Trumpet vine

http://en.wikipedia.org/wiki/Trumpet_vine

http://davesgarden.com/guides/pf/go/644/

I hate this vine with a passion. It crawled up the house, around the house, in the house. I had it coming up in my bathroom out of every little crack in the floor. I tried killing it and it would not die. I tried cutting back to the root, and it came back. I tried poisons, salt, and never watered it except for rain. I didn't plant it, I bought it with the house. It introduced ants to my roof. If I ever see this plant in a garden in, I promise I will run as fast as I can.

- quote from Dave's Garden (link listed above)