After failed attempts with other lessons that promised "be where you want to be" yet required a workbook, or launched straight into conversations with your dentist, Pimsleur's Basic Dutch is a true, commuter-friendly beginner's Dutch on CD.
The (well-priced) package contains 5 CDs, with 2 lessons per CD, lasting about 30 minutes each. The lessons build upon one another, increasing vocabulary, understanding of sentence structure, and confidence. The male and female characters converse with each other, and the listener, teaching syntax and cases through phrases you'd actually use during travels. You're also exposed to regional pronunciations, (my Dutch husband says the guy is from the south), so a heads-up on a bit of variance there.
Pimsleur's approach is as fun as the language is challenging, and the lessons really work. You find yourself trying to beat the speaker to the Dutch translation, and laughing at the guy's insistence to have lunch at his house. It's the perfect way to make the most of a daily commute, and my Dutch in-laws are impressed with my rapid progress and accurate pronunciation, so I highly recommend this product.