Going to Greece at the end of May so I'm looking to pick up the extreme basics of the language, or about as much as I can learn in the next 2 months. I want to do this because we'll be venturing into some areas where English might not be widely spoken.

Anyone done this before going on a trip? What's the best way? There's Rosetta Stone obviously, but I'm not sure that's the best method for what I have in mind. What about youtube? Anyone ever tried picking up some basics off youtube? Any other good sites?