Embedded scripting languages

What scripting language would you embed to a program? The performance would not be main issue, since the compiled part of the program would worry about that.

The scripting language would call many functions written in C, C++, or whatever lang that can compile C-like functions (so there needs to be some kind of easy to use FFI).

I thought about options here:
- Lua
- Scheme (tinyscheme or whatever)
- Something else?

Now, what would /prog/ use, and why? ("Read SICP" is not a valid answer here)

>>42
This argument gets posted over and over. It is irrelevant. Nobody uses the hashtable module in Haskell.
Compare stuff that matters: pure Python and pure Haskell text and XML processing, parallel numerical computation, parser performance. Check the goddamn language shootout.

>>44
Terrible[i] dubs.