i. He or she must have a name that's useful for crosswords. Puzzle writers prefer having rare letters in unusual combinations (for example, I once snuck JFK, JR into a New York Times crossword at 1-down), but short groupings of common letters are the lifeblood of crosswords, and you'll need a lot of them if you want to make things work. For that reason, crossword-famous names are likely to be three, four, or five letters long, with as many 1-point Scrabble letters as possible. Think of names with a lot of vowels, and any combination of N, R, T, L, or S.