For all: Cut tomatoes lengthwise and discard seeds. Stuff about 4 hours before serving. Cover & refrigerate.
Cheese & Shrimp: mix cheese, catsup and dill, stuff tomatoes and top with shrimp.
Guacamole: mix ingredients together, stuff and top with crisp bacon.
Alternate method: Fill tomatoes with sauce of chopped onion, cream cheese, sour cream and black pepper. Top with a bit of parsley.