... Count starting from 0, think in if-else statements, believe 1 + 1 = 11, ... program? What languages do you know and how long have you been doing it?

Me (in order of frequency):
Java
HTML/CSS/XML
C++ (will change soon to the top due to Project:N00b)
VisualBASIC
BASIC

...and I've been programming for about 10 years now.