The “video” tag in my Delicious keeps growing and has reached 275 references. I opened this tag to prepare an experiment of facilitating a discussion session in the course Repensar las políticas urbanas 30 años después. That exercise took place late in 2010 and one year later, I posted A selection of 75 videos about cities and urban policies highlighting some of the videos that were considered for the final short-list of videos we finally used in the session. I will try to find the time soon to update this list but, in the meantime, here you can find 10 pieces that draw a selective and incomplete (but still relevant I guess) picture of some of the main ideas that influenced how cities were thought, designed and built in the 20th century. A mix of names, cities and rarities in some cases, and not an official chart of the most important ideas or topics of last century urbanism.