I'm an aspiring hacker, but definitely not there yet. I've made some cool stuff in FORTRAN and Matlab (numerical analysis major) and I've pulled off some somewhat clever stuff in SAS, but it's hard to really feel like part of the community without knowing some kind of "industrial strength" language like python, C, C++, Java, Scheme, Perl, Ruby, etc. really anything that you could build a web-app in, even if it's blub.