Smoked haddock is great - I love it cooked in milk, with a knob of butter and some pepper then using the milk to make a parsley sauce with cornflour to thicken - that's quite easy. You just put the fish flesh side down in a large pan, like a frying pan and pour milk over to cover. Cook for about 5 to 7 minutes depending on the thickness of the fillets. You can tell it's cooked when it's firm to the touch - but don't burn your fingers...
Also, the milk is good just with bread dipped in it :-)