I have one White Jersey Giant Cock (Hatched 2 weeks before Easter 2012) and I plan on crossing him with the Cornish hens. The Leghorns are for Egg Production along with the Naked Necks or Turkens who lay very well in winter and are good general Dual-Purpose Breed and the others for various sex-linked crosses.
Here are some commen Crossings.
NH means New Hampshire
Golden Comet or Black Star = NH Rooster and Barred Rock hen
Cinnamon Queen or Red Link = NH Rooster and White Rock
Red Link = NH Rooster and Silver laced Wyndotte
Red Link = NH Rooster and Rhode Island White
Red Link = NH Rooster and De
California White = California Gray Rooster and White Leghorn hen