I started playing with my speed light in conjunction with my 50mm fixed telephoto macro… Needless to say I got some intense shots! You can check out how you can do it too @ EverydayHDR

Olympus E-30
Zuiko 50mm lens
Extension Tube

Single exposure HDR for the spider, background from the original exposure.

Processed with Photomatix Pro
Post Processed with Adobe CS 5