It must be Python. The language is too simple for me to use in variety directions.

C++, because with C++ i started hight security system

php python perl i like it

my favorite is PHP and COBOL

C, & C++ because they're good for embedded systems. My only gripe with C is that the availability of things in the STL make C look like a barren shithole and is full of people who just throw asymptotic analysis out of the window to favour some linked list clusterfuck. Also dabble in assembly every so often.

python ,simple but powerfull

C, for malloc and pointers

java, just because I'm more familiar with it

Python : Easy to learn, and you can export to all plateform

Python.. Easy scripting