Mitigating against "Halo & Shadows" with LED Systems, courtesy of the always-innovative Reflecmedia:
Google results: First Link to PDF

"Green Screen LED & Halo Effect", courtesy of dvcreators.net:
http://dvcreators.net/discuss/showthread.php?t=27491

Superb all-around info!
http://generalspecialist.com/2006/10/greenscreen-and-bluescreen-checklist.asp

For AE Keylight users.... includes a great script:
http://aenhancers.com/viewtopic.php?t=40

Blue Chroma Channel Noise
http://www.vfxtalk.com/forum/blue-channel-noise-t13919.html?s=de767188b322f5a9b23f1746459b5b31&

Chroma Keying in Final Cut Pro HD
http://www.kenstone.net/fcp_homepage/chroma_key_fcp_hd_monahan.html


Other Cool Links:

Free Chroma Key Software:
http://www.cinegobs.com

Great info on Lav rigging:
http://www.locationsound.com/proaudio/ls/tips/techtips8_4.html

202 DIY Filmmaking Tutorials (make your own stabilizers, jibs, etc.)
http://filmmakeriq.com/general/featured/202-diy-filmmaking-tutorials.html

Sennheiser Vacant Frequency Locator (for those using Senn Wireless rigs, to comply with the new FCC regulations)
http://www.sennheiserusa.com/findFrequency/

Free Green Screen Plates to have fun with:
http://www.hollywoodcamerawork.us/greenscreenplates.html

The Grip Book (online excerpts)