Some Links:

Really Right Stuff    www.reallyrightstuff.com
Largest stock of beautifully finished camera support equipment.

Wimberley    www.tripodhead.com
Manufacturers of Side Kick 

Cognisys   www.cognisys-inc.com/index.php
Manufacturere of Sabre Lidar trigger & Stackshot hardware.

Linkdelight   www.linkdelight.com
Chinese source of everything photographic

Flash Zebra    www.flashzebra.com
USA based all things for flash photography

Small Parts    www.smallparts.com.au
Queensland based source of an amazing range of mechanical items. 

Fastener Express    www.fastener-express.com
USA based small fastener related seller from nylon nuts to mil-spec black titanium socket head screws.

Richard Jackson    www.owlphotographer.com/index.php
Sydney based Owl Photographer & maker of specialised night bird photography equipment.

Ralph Paonessa    www.rpphoto.com/store/default.asp
Hummingbird photo workshops & best source of Better Beamer

Birds Ireland  www.birdsireland.com
Eric Dempsey is the author of several pre-eminant Irish birding  books, does birding tours &  together with Hazel runs a very lovely B&B.