Jim Fowler's calc II course on Coursera[1] is wrapping up right now, and I think he's the most engaging math professor I've ever had to please of learning from. Highly recommend.

He's also a maintainer of an OSS MOOC platform, MOOCulus[2], built with Rails.

[1]: https://class.coursera.org/sequence-001/class [2]: https://github.com/ASCTech/mooculus