In a food processor, combine cheddar cheese and cream cheese. Pulse the food processor on and off until the two are just mixed. Put this cheese mixture into a bowl. In the food processor, process butter until smooth. While the machine is running, pour in small amounts of Port Wine, processing steadily until well mixed. Add the port wine/butter mixture to the cheese mixture. Mix together with a spoon. Form cheese into a ball, roll in chopped pecans, or use walnuts if you'd rather. Serve with crackers. Enjoy!