Crossword matchmaking

On the NPL list, I asked
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In today's (Friday) NYT, #1 Across,

IRONCHEF

was joined with

MONALISA,

just underneath. It would be nice to have them to dinner.

What might be some other natural couples---any as good as this one?
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Mel Rosen (Quip) replied:

For a CrossSynergy puzzle a few years ago I set SID CAESAR directly above CLEOPATRA. -Quip