I finally made my own pimento cheese! It was delicious and I'll probably be making another batch real soon!
16 oz sharp cheddar cheese block
2 c mayo (I used Duke's)
4 oz pimentos (I may double this next time)
several dashes of Worcestershire
1/2 t garlic powder
1/4 t pepper
With your food processor, grate the cheese and then dump the cheese into a bowl. Remove the grater attachment and insert the chopping blade. Add back 1/2 of the cheese and add the mayo. Blend and when it is well blended, add the rest of the ingredients. Blend until well incorporated. It will be pretty soft but will firm up some once refrigerated. I think it tastes better two once it has been refrigerated overnight.