I'm not at all sure how this site works yet (I've gone only on traditional forums), so bear with me please if I do something foolish. I'm being drafted to the IDF in a few months and I need to learn Hebrew very quickly if I want to avoid being put into a program for foreign speakers. I currently reside in the US, but I've previously lived in (and have citizenship of) both countries.
After experiencing the government-sponsored Hebrew programs, I totally refuse to accept such a ridiculously inefficient and traumatic method of teaching a language. When I get enlisted, I'll want to focus whatever little time I have left on studying more important things. Something that will damage me psychologically, not to mention take up huge amounts of time and effort, will take away any opportunity I might get.
I can speak a few basic phrases in Hebrew and and can understand a bit more. Immersion is not an option for me currently. My attempts at teaching myself the language have been stunningly misguided (which is to say, like reading Atlas Shrugged to get a proper understanding of Objectivism) and I'm not interested in a lengthy trial and error process. Obviously getting literature on language acquisition is out of the question. I wouldn't even know where to start.
So, I'd just like some methods or heuristics for picking up languages as fast as possible. (I am extremely literate, so there's that.)
Listen as much audio spoken by native speakers as you can. My guess is that children programs are best. Maybe some Hebrew dubbed cartoons that you are already familiar with. First priority is to get your brain trained on the sounds of the language.
Speak with a native speaker that knows English. You can use http://livemocha.com/ for this.
Speak badly but speak.
From my personal experience, biggest hurdle in learning a new language is actually using it. Getting past the "shame" filter of your brain. If you accept that mistakes are unavoidable and just start speaking, you will get a lot of practice and you will improve. Of course, it's nice having a professional aware of the fact that you are a beginner, giving you clear and precise feedback. :)
Both of my parents qualify. We've tried to revert to only Hebrew plenty of times. If we can make it through the day I guarantee you it'll be back to English by the time next morning rolls around.
Amen.