A few examples...

From the official Pecha Kucha presentation site. Slightly "science-y".

Detroit in a World Heritage Area
http://www.pecha-kucha.org/presentations/571
(Julian Raxworthy at Blue Mountains #2)

Tangible Interfaces
http://www.pecha-kucha.org/presentations/362
(Carlos Velasquez at Miami #14)

Winemaking
http://www.pecha-kucha.org/presentations/403
(Fabien Jacob at San Antonio #5)

Oceans
http://www.pecha-kucha.org/presentations/477
(Geoff Hodgson at Dunsborough #1)

History of British Accents
http://www.pecha-kucha.org/presentations/555
(Mark Staplehurst at Toronto #16)

Making
http://www.pecha-kucha.org/presentations/303
(Kevin Lim at Tokyo #88)

Solar Artwork
http://www.pecha-kucha.org/presentations/527
(Nacho Zamora at Dubai #11)

Neurobiology 101
http://www.pecha-kucha.org/presentations/502
(Pierre Magistretti at Lausanne #8)

Navigating the Toronto Transit System
http://www.pecha-kucha.org/presentations/509
(Ilana Ben-Ari at Toronto #14.)