I've been supporting Language Transfer for years. I believe that the program suffers a bit when it branches out into languages with grammatical case more complex than English.

But the courses are all free of charge. Please recommend them to friends or family to spread the word! I can especially endorse the Spanish course.

I just went to the site. From the description, it sounds like a similar method to that used in the Michel Thomas CD courses. I'll definitely try it!

I think it's actually better than Michel Thomas, but you're right that it's the same system.

Fun fact, this system was first pioneered not by Michel Thomas, but rather by Margarita Madrigal. She has a book called the Magic Key to Spanish. You can also find her Magic Key to French and German online since those are out of print.

I have zero experience with it, but I've heard many good things about the Rosetta Stone software. As in, I know real life people who have used it and gush about it it.

I'm not able to judge their fluency, but some of them have been using it to learn a variety of different languages. The lady that lives at the neighboring farm speaks at least a dozen languages and she's learned all but two of them with the software.

She speaks passable French and Spanish (and English, of course) so I can vouch for the Spanish and the missus is fluent in French.