Quick answer (well, that's what it was supposed to be 
):
If he's amel and you don't know of his genetic background (what parents were, etc.), then the most variety you would get is 50-50 normals and amels if you breed him to a snake, whatever morph, that was het amel (a carrier for the recessive gene). It is likely that your amel is carrying more than just the amel gene, a snake such as a snow, for example, will test to see if your snake is also carrying a gene for anery. (in which case you could get amels, snows, and anerys). A ghost would test for hypo and anery, but you wouldn't get any amels out of the pairing.
If you want non-normal babies and don't mind perhaps getting all amels, look into snows, reverse okeetee (albino okeetee), blizzard, amel anything (lav, bloodred, butter, etc). If you continue breeding the 2nd generation is when you can get some really interesting stuff.
I recommend getting whatever draws you the most.
As for genetics:
Candycane and sunglow are selectivly bred amels.
Okeetee and miami are selectivly bred normals.
Creamsicles are the amel result of crossing a corn with a great plains ratsnake.
There are some good sites on genetics, etc. out there on the web, I'm sure someone will post them for you (don't have the links handy right now). There are also web-based plain (non-species specific) genetic calculators, but none that I know that are designed for corns (you'll have to input your own genes into the program)
Recessive corn genes:
Amel
Hypo (various varieties, but only one really common)
Anery
Charcoal (anery b)
Caramel
Lavendar
Motley
Stripe (this and motley are related to each other)
There may be more but it's nearly 4am here, so I might miss some.
Bloodred is kinda recessive, but not entirely (close enough to do approximations though)
Combining 2 or more of the recessive traits gives you the great variety of corn snakes.
Study breeding combinations and outcomes and you'll learn a lot of mendelian genetics.
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-audri
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