In addition to the Nikon D7000 sensor which is made by Sony, here is some more information from Chipworks on the different sensors in Nikon DSLR bodies:
Nikon D3/D700 sensor NC81338L: made by Nikon
Nikon D3s sensor NC81361A: made by Nikon
Nikon D3100 sensor NC81362A: made by Nikon
Nikon D90 sensor IMX038: made by Sony
source:http://nikonrumors.com/2011/01/26/the-sensors-of-the-d3-d3s-d700-and-d3100-are-made-by-nikon.aspx
