BeeDeeDubbleU - 12:10 pm on Sep 8, 2010 (gmt 0)
Firstly, the ultimate heading of a page is the title, therefore you may reasonably have as many H1 headings as you wish and undoubtedly you could have an H6 above the second H1. Secondly, it is perfectly reasonable to place an H3 within the range of an H1, etc. therefore, following the logic from above, it is reasonable to use an H2-H6 as the first heading and use an H1 below it.
Kaled, I have to say that I do not follow your logic and I am not so sure that Google would either. I think most people would agree that for SEO purposes the Page title and the H1 should essentially be the same. That would preclude the use of a second H1.
There is nothing to stop you doing as you suggest but IMO that does not make it right. ;)