tpp is a command-line presentation tool written by Andreas Krennmair <ak@synflood.at> and Nico Golde <nico@ngolde.de>. You can find the original here: http://www.ngolde.de/tpp.html

I simply made it into a gem for super easy installation:

  sudo gem install tpp

Usage example:

  tpp /Library/Ruby/Gems/1.8/gems/tpp-1.3.1/examples/list.tpp
  tpp /Library/Ruby/Gems/1.8/gems/tpp-1.3.1/examples/source.tpp

Or if you're using RVM:

  tpp ~/.rvm/gems/<your-ruby>/gems/tpp-1.3.1/examples/list.tpp
  tpp ~/.rvm/gems/<your-ruby>/gems/tpp-1.3.1/examples/source.tpp

There are more in the examples folder.