- TVO’s Big Ideas: Lectures on a vast array of truly thought-expanding topics.
- CBC Radio’s Best of Ideas: Programs and interviews with original thinkers.
- ABC Radio’s Big Ideas: Cutting edge thought from leading thinkers.
- BBC Radio’s In Our Time: Examines history, art and science’s influence on society.
- ABC Radio’s Philosopher’s Zone: Current trends and relevant new ideas.
- National Public Ratio has a whole directory of podcasts, my favourite of which is, of course, Science Friday.
- Some personal favourites include Buddhist Geeks and Logically Critical.