Do you need HDMI cable to watch Blu-Ray Movies?
AnswerIf you want them in 1080p yes. HDMI stands for "high definition multimedia interface" and will do both your audio and video.
You can also use the component cables (the 5 cables with the green, blue etc) This will make it in 1080i. The naked eye can tell zero difference between 1080p & 1080i. The p stand for progressive & the i for interlaced. Both are high quality HDTV. The HDMI & 1080p is newer & considered to be the best though.