Scipy Superpack is kind nice, but it seems to be inactive for a while and I want every thing under my complete control. So I went on installing them myself under homebrew-ed python.
$ brew install python
$ brew install gfortran swig
First try failed with something mysterious. pip install numpy went well but pip install scipy complained:
Could not find file(s) ['/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/numpy/core/lib/npy-pkg-config/npymath.ini']
Turns out there's a simply solution. With some extra options, pip actually keeps those intermediate files and scipy installer will happily find them:
$ pip install --log pip_numpy.log --build pip_numpy numpy
$ pip install scipy
$ pip install ipython
$ pip install pandas
$ pip install pymc
$ pip install scikit_learn
$ pip install statsmodels