I believe we have seen Casey Muratory doing hot code reloading in C++, in his Handmade Hero stream. Compile the dll, reload & test the dll, without exiting the game runtime he's developing.

The Yi editor, written in Haskel, I believe does hot code reloading as well.

The XMonad window manager can be recompiled and reload while keeping your windows up (the configuration file is actually Haskell code).

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Yes, hot code reloading is bloody useful. It is also perfectly compatible with static typing. I see no good reason for statically typed languages to have worse support for it.