Wikipedia entries for various topics brought up in this episode:

Deism

Theism

Mysticism

Osho

Absolute zero

Virus

Fibonacci number

Curvature of space-time

David Ogilvy

Measure 11

Trinitron

Ritual

Reiki

Eastern Orthodox Church

Other material:

Example of a Lego figurine

"The sabbath was made for man" - Mark 2:27 in context

Pike Place Market in Seattle, USA

Stash Tea of Oregon

Richard Dawkins' official Web site

My critics are wrong to call me dogmatic, says Dawkins

Danielle Forums