I'm a PhD student at the University of Adelaide and CASS in Sydney. My work is on the Lunaska project, which aims to detect high-energy neutrinos from the radio pulses they produce when they hit the moon. From an astronomy point of view, this involves very high time resolution observations, and a lot of time spent trying to separate real pulses from interference.
Most of my raw data processing is done in C, for performance. I use Python for simple simulations, ephemerides, plotting, etc.; and Perl to tie together input/output from other programs. I'd like to learn how to use an interferometry package like MIRIAD or AIPS sometime - they're not relevant to my current work, but they'll be important if I find myself doing more conventional astronomy in the future.