I was in Spelunkers in Front Royal, VA, a couple weeks ago and saw they were selling pumpkin milkshakes. It sounded yummy to me, so I tried to make some:
2 scoops vanilla ice cream
2 tbsp. canned pumpkin
1/2 cup milk
If you really like pumpkin pie, or the taste of pumpkin, you will really like these. If not, I'd substitute the canned pumpkin for two generous squirts of Hershey's chocolate syrup.