People have been praising these programs for a while now and I can understand why, but I think an exception has to be made for the Hebrew version, and I'll explain.
I purchased this back in January of this year to prepare for my up-coming trip to Israel in June. I did have a very small vocabulary already of some Hebrew words and phrases before I bought this. In all I would say I knew about 100 words, and short phrases such as asking someone how they are, and I did learn how to tell someone that I did not speak Hebrew and ask if they spoke English. Very basic, but still maybe more than a lot of people getting this program.
So here is what I do not like about it. I understand the importance of immersion, and there is not a speck of English in these lessons, and that is the problem, because no English also means no written English as well. When pictures are put up you will hear the Hebrew word for it, and it will also be spelled using the Hebrew Alphabet, which of course means nothing to me, or to you if you don't know Hebrew, you obviously don't know the Alphabet. It would be nice if they had a phonetic spelling of the words in English (like the Hebrew-English phrase books that I own). I find this to be a big help, being able to read the word helps me to remember and associate the picture to the word, and also helps with pronouncing it.
To be honest, I have gotten more useful Hebrew out of the Pimsleur series of introductory Hebrew. With that I can already speak complete sentences and have small conversations, and order in restaurants etc, and those I can listen to in the car, or at the gym and they cost much less. As you can see between Rosetta, Pimsleur, and my phrase books, I have taken learning Hebrew pretty seriously, and have invested a good amount on it. I won't say that I have not gotten anything out of Rosetta Stone, but it is not as magical as the adds that you may have seen make it out to be, and again, I think this may pertain to languages where the alphabet and the characters are so different from English.
The last criticism that I have is the included audio files that you get with it that you can download to iTunes. I was really excited about that until I played them. All they have is someone saying the Hebrew words from the lessons on them. Not even the English word first, then the Hebrew word so that you know what it is. It is like listening to a Hebrew movie or TV show with your eyes closed. You have no idea what the word means if you don't already know it. And if you have heard the word before but are not 100% sure on what it is, there is nothing to remind you, either you know it, or you don't, and that is confusing and frustrating. I don't know how anyone could find that useful. After about 15 minutes of listening and realizing this I didn't even bother listening to another, and went right back to my Pimsleur cd's.
Everyone learns differently, so what is not helpful for me, may be fine for you, but if you think this type of immersion learning is right for you, then go for it, because if you can learn that way, then I think you'd be rocking Hebrew in no time.