I'd say it was a Helianthus, but which one is hard to tell. Does it spread?

It spreads but only like a normal herbaceous clump would... My customer who's garden this is from, believes that it is a Cephalaria. But I don't think it is, whenever I've searched the web for it using this name, it will bring up pictures of scabious, which really doesn't compare in the slightest.
It will grow about 6 to 7 foot high, With beautiful drooping petals of bright yellow. Flowers will last from mid to late late summer.
Thanks Brett

Neither Scabiosa (Cephalaria) nor Helianthus, I reckon this is one of the Rudbeckia family. There are a few, but at that heigh possible R. maxima. The central dark part of the flower gives them their popular name of 'coneflower'.

Helianthus or Helenium for me although they're all very similar...Rudbeckias, Echinaceas, heleniums, Helianthus....all similar

I think it is rudbeckia laciniata "Golden glow"

http://www.flickr.com/photos/31559373@N00/1224683654/

Fantastic, 100% Rudbeckia laciniata "Golden Glow"
I can now start referring to it by its proper name
Thanks all