In general Lal's course seems to be partly conducted in response to Hindu nationalism. Lal doesn't spend much time to define Hindu nationalism, nor does he show where it hits the scene and who are the main figures involved. Yet, what is made clear over the entire course, which covers 5000 years of history, is that the interpretation of India's history is greatly politicized by Hindu nationalism and Lal disagrees with its tenants - whatever they are.

In this respect Lal is unclear about Hindu nationalism, but makes a point in using another term in the discourse: Communalism. Communalism is a social cultural approach to people, culture and tradition and poses religion at the pinnacle of human identity. In the communalist view, one can be man, living in Delhi, Hindi speaker, but ultimately one is a Hindu, or alternately, a Muslim. In that view one is not a Bengali first and a Muslim or Hindu second. The religious identity politics that is founded by the communalist view makes the coexistence of Muslims and Hindus more problematic and tends to view the Muslim element in India History as intrusive. Lal on the other hand claims that for example the Moguls are profoundly Indian and an the Mogul empire is an integral part within Indian history, even if it is Muslim.
All of this material is so rich, one simply must have more podcasts to get a better picture. If I walk backwards through the course I can mention a couple of tremendously fascinating subjects which are touched upon by only few or no other podcasts I know of:
The life and works of M.K. Gandhi - half a lecture in Lal's course and some attention in Berkeley's Introduction to nonviolence
The rise of Indian nationalism and unrest in the 19th century (with the rebellion of 1857) - Hardly more than a lecture and a half with Lal and no other podcast to cover even a bit of this.
British India (under the company and under the Crown) - Few lectures with Lal. In courses that touch on British History, here and there one will touch upon India, but I do not recall anything substantial on the top of my head.
The Moguls - What little you have in Lal can be nicely supplemented and compared with UCSD's MMW4
The Guptas - What little you have in Lal can be nicely supplemented and compared with UCSD's MMW3
Hindu texts; Vedas, Upanishads, Mahabharata - Lal uses these extensively to relate to Indian History until the Middle Ages. For me this is the most confusing part. Which podcasts brings some order?
Indus Valley Civilization - There is a very old issue from David Kalivas' World History that touches upon this civ, as well as five minutes in Engines of our Ingenuity. Lal's contribution is to show how even this history is politicized.
Lal's last remark in the course made a huge impression on me. He said to make a distinction between Indian Civilization and the Indian State. The Indian state may be very young, but Indian Civilization is very old. Also, the civilization stretches much further than the state. Civilization can be much richer and contradictory than a state can be.
More History of India:
8 podcasts I listened to,
History of India or Europe?
History of India.