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

Ada
COBOL
FORTRAN
Pascal

>Visual Basic

Good luck trying to learn anything else properly after that. Because all programmers who have been exposed to BASIC or its variants are mutiliated beyond recovery.