I have never liked pb&j. I go for more complicated sandwiches.

Around Thanksgiving time:
Hot Turkey slices, stuffing, thin layer of turkey gravy and melted cheese on toasted bread (cranberry sauce optional)
Rest of the Year:
Tuna Salad with crispy bacon strips, mustard, lettuce and melted mozzarella on toasted bread. (Really, it tastes better than it sounds).