Try compare between FULL HD Blu-Ray movie with common DVD movie (either single or dual-layer, which is DVD5 and DVD9)... and u'll understand the different in term of video and audio quality ... but definitely u need a FULL HD display as well for the viewing at full quality.

Few months back I been to a Sony Roadshow at 1 Utama and the people there showed and explained how different between FULL HD Blu-Ray movie and also our common DVD movie . Example they showed me the Open Season movie in FULL HD Blu-Ray and also normal DVD version, the fur of the bear really realistic and detailed in FULL HD while it is just pixelized (got such word? ) in normal DVD. The uncompressed sound quality of Blu-Ray definitely a lot better than DVD compressed ones .