From Rosetta Code
My Favorite Languages
Language Proficiency
X86 Assembly beginner
6502 Assembly I used to dream in this
MIPS Assembly used to be proficient
C proficient
C++ proficient
Perl proficient
Perl 6 beginner
PARI/GP beginner
Python intermediate

My main interests are in number theory. I do a lot of Perl, C, and C+GMP development. I've used many languages in the past, and have dabbled or debugging programs in more.