Excellent collection of Motomachi photos on TripAdvisor.com:

http://www.tripadvisor.com/Attraction_Review-g298562-d2558881-Reviews-Kobe_Motomachi_Shopping_Street-Kobe_Hyogo_Prefecture_Kinki.html

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A video tour starting from outside the east end entrance:

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A walk through Motomachi, Sannomiya Center Street, and Sannomiya Station underground arcades (Santika/さんちか), ending at Mint Kobe:

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Japanese Language Readings:

An edited video with better audio quality, starting from Motomachi 5-Chome (most of the video is inside of Pizza Bar Napoli):

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A list of shops:

http://www.kobe-motomachi.or.jp/cont02/cont02.htm

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Hankyu Rail recommends Sannomiya/Motomachi and two other pedestrian arcades:

http://www.kansai360.net/en/line/000025/