Learning Spanish

I've studied Spanish as a child and as an adult. I've taken classes as continuing education and studied in an immersion setting in Cuernavaca, Mexico. But, I haven't practiced much and I live in an area where speaking Spanish is not a day to day necessity. I've come to believe that in our environment in Southern California, speaking Spanish is at least a courtesy, and a means for showing respect for a huge number of people we have had mixed results in reaching. Just re-reading that sentence tells me that my view of "us" and "them" is an indication that we haven't been too successful in reaching and integrating people for whom Spanish is a primary language.
So, and I believe God is leading me here, I've recently decided to review and improve my Spanish. One thing I remember from my earlier continuing education studies is that a knowledge of and respect for Latino culture is more important than speaking Spanish for shared ministry. However, I think it is helpful, if not an absolute necessity, to at least have some ability in Spanish. And, when I ask myself as an "Anglo" (though I'm more of a "Scandi"), "what languages would Jesus speak" I have a strong sense that one of them would be Spanish in our context.
Following is a list of resources for personal study that have either been recommended to me or which I have used and found helpful. I'm starting with some Spanish language background, but these have also come recommended for the raw beginner who doesn't have the time or access for classroom instruction, and wants to learn at their own pace.
Plimsleur Quick and Simple Spanish - tapes or CD's A very slow and basic intro to conversational Spanish
QuickStudy Spanish Vocabulary Flash Cards - also comes in a laminated sheet version
Practice Makes Perfect: Spanish Pronouns And Prepositions - a workbook for concentrated grammar and vocabulary and written Spanish
Practice Makes Perfect: Spanish Verb Tenses - same as above
Learning Spanish Like Crazy: Spoken Spanish, Vol. 1 - CD's, Vol. 2 also available
501 Spanish Verbs: with CD-ROM (Barron's Foreign Language Guides)
Merriam-Webster's Spanish-English Dictionary
VOX Super-Mini Spanish and English Dictionary - a smaller handier but less comprehensive dictionary than the Merriam-Webster
1001 Most Useful Spanish Words (Beginners Guides)
Are there others that you know or have heard that are helpful?