These days, Blu-ray Disc Players have more features than just watching an HD movie. Things like streaming movies or renting movies or even watching TV/music ...
Bluray disc and HD DVD Production Tour
My first Blu Ray disk burned and printed
How to rip a Blu-ray disc
BDPS1200 Blue Ray Disc Player
Burning a Blu-ray disc
The Sony BDP-S185 Blu-Ray Disc / DVD Player