If you're going to the trouble of remaking a franchise, the
least you can do is get the old star's seal of approval. If they're open-minded and spry enough to deliver their old catchphrase, then
jackpot. If they're a little reluctant, or a lot old, that's no problem - just coat 'em in some makeup... maybe prosthetics too... hell, make 'em a monkey!
Here are a few times big stars were gracious enough to pass the torch to their replacements on film: