Resources:

Xbox 360 Premium - HDMI Cable / Digital Optical Adapter Hack
Try to plug in a HDMI cable and the A/V cable the xbox came with - this ..... http://www.xboxlivecrew.com/ http://www.chadledford.com/?p=50 <–How to use ...

Comprehensive Video Cables
XHD Ultra High Resolution HDMI to DVI Cable, 50 ft. 24 awg for signal fidelity over long distances. Lifetime warranty. View specs and photos ». $205.00 ...

50' HDMI Cable - High Def Forum - Your High Definition Community ...
I need a 50' HDMI cable to connect to my new HD TV. I've read that for cables longer than 40' would need repeaters or something like that. ...

50 feet hdmi cable - Computer Cables & Adapters - BizRate ...
Compare prices on 50 feet hdmi cable Computer Cables & Adapters. Find store ratings & read consumer reviews on Computer Cables & Adapters.

Extending DVI and HDMI Cable Connections: Fiber Optics or Copper Wire?
These cables do not come cheap especially at the shorter lengths; expect to pay around $500 for a '50 feet fiber optic based' HDMI cable. ...

Gefen CAB-HDMI 50MM 50' HDMI Cable
50' HDMI Cable; For use with DVD players, HDTVs, LCDs, projectors, plasma, TVs and satellite set-top boxes; Transmits uncompressed digital video resolutions ...

HDMI to HDMI Cable, 50 ft.
Click to enlarge pad HDMI Cable, 50 ft. (M-M) HDMI cable 50 ft. cable, ... Copper based 50 ft. cable; supports resolutions up to 1080i with an HDMI booster. ...

News:

 But non-captive plugs aside, cable lengths beyond about 50-feet are a dicey proposition without resorting to extra hardware. ...
 Transmitting high definition audio/video over a long distance using a standard HDMI cable, results in digital degradation. For every 50’ the HDMI signal ...
 The HDTV offers built-in ATSC, NTSC and QAM (digital cable) tuners, 3 HDMI and 2 component video inputs, as well as composite and S-video inputs. ...
 For installers wanting to route digital video through plenum spaces, the only option has been to use expensive CAT5 extenders, and Plenum CAT5 cable. ...
 But it lacked a place to plug an HDMI, or high definition multimedia interface. HDMI, the latest standard, is a single cable that can carry uncompressed ...