I love these lessons. They've increased my level and help me stay sharp. Bonus fun is listening to they're banter and find agreement together. It is educational without being stuffy or boring at all. Highly recommend.
I downloaded the entire Light Speed Spanish series, and I listen to it on my iPod while I'm driving. I learn more and more with each lesson, and I'm able to practice with my Spanish-speaking friends. I highly recommend this series.