A very interesting course has begun running at UCLA: History 182G - Secular Jewish Culture (feed). David Myers teaches a relatively small group of students, so it sounds, the history of Jewish people looking for their secular versions of Judaism. The fact that this is a small group, warrants a lot of interaction with the audience, which on the one hand makes it extra fascinating. On the other hand, for the passive podcast listener, breaks up the structure of the lecture frequently especially when you cannot hear the questions and remarks by the students.
The next figure to come up in Myers's course is Maimonides. Like Philo, he let's in the Greek culture - which comes to him through Arabic and just like Philo he gives a genuine Jewish twist to it. And so, even if Maimonides is a great figure in mean stream Judaism when it is about his commentaries to the Halakhah, his philosophy is deemed less so and serves for Myers as example of secular Jewish Culture. And we haven't reached Spinoza yet at all.