Variety is everything with squashes and pumpkins: some (the Atlantic Giant pumpkin, for example) are bland and uninteresting, whereas others are sweet, creamy and delicious. Recommended varieties include Hundredweight (the traditional lantern pumpkin), Sweet Mama (a lovely small squash), Baby Bear, and most varieties of acorn squash. They are easy to grow if started under glass or on a windowsill. Don't plant them out until the risk of frost has passed. They need plenty of space, and love manure so much that some people actually plant them on top of old compost heaps. I just dig plenty in when I transplant them.