Warner Bros has released a few new behind-the-scenes looks at the making of Harry Potter and the Sorcerer's Stone and Chamber of Secrets. Included in the previews are interviews with Daniel Radcliffe, Rupert Grint, and Emma Watson from not only the sets of the first two films, but Deathly Hallows; and with producers David Heyman and Mark Radcliffe, who, along with Chris Columbus, explain how the films came together, from initial casting to editing scenes for the features. They can be viewed below.

The first video has a bit of a treat, where Emma Watson, from the set of Deathly Hallows, reads Hermione Granger's introduction in Philosopher's Stone.









UPDATE: Three new clips from Chris Columbus' picture-in-picture commentary of the first two films have been released, as well, and can be seen below.







The Ultimate Collector's editions can be pre-ordered via the following links (currently only in the US and Australia):

Sorcerer's Stone DVD; Sorcerer's Stone Blu-ray
Chamber of Secrets DVD; Chamber of Secrets Blu-ray