Confirmed excerpts from 'The Pale King':
- A short passage about the childhood of a girl called Peoria who works for the IRS was read during To The Best of Our Knowledge (Section 2 from 32:15).
Other bits and pieces:
- Michael Pietsch's comments during a Panel at MLA09 (here) suggest that various pieces previously published such including Incarnations of Burned Children and The Soul Is Not a Smithy (both from Oblivion) are also chapters.
- Based on David Foster Wallace's comments at the reading, maybe these.