Recommend me some good language to learn

I already know the following:
C (both ansi and kernigan and Ritchie)
C++
X86 Assembly (masm)
Visual Basic 6
Visual Basic .NET
C#
J#
Java
HTML
Scheme
Perl
Bash (scripting)
Python
Lua
Sicp

>>24 No, I really don't.

asm or turing machines can do even more, why don't you think these are more appropriate to program with?

Besides, operator overloading is just syntactic sugar. It doesn't enable you to do anything you can't in other languages.