Funny you should ask this question today. Last night Buck and I had crabcakes made with immitation crab. They were delicious. I'll get the recipe and post it later in the fish section for you.
You can make a dip with cream cheese, the crab, garlic powder, horseradish, cream or half and half, almond slivers (toasted) - bake. Serve with plain crackers or plain flatbread.
Add to an alfredo sauce
use in a sushi roll (crab and cream cheese)
what everyone else said