Your Best HiFi DVD

I have started to build a collection and really like the following:

Lyle Lovett Live
Springsteen Live in Dublin
Chieftains Down the Old Plank Road
Cindy Lauper Live - awesome Money Changes Everything!
Mark K and EmmyLou - Real Live Roadrunning
Stones - Shine a Light
Many others -hope there is a DVD of the Krauss/Plant tour

PS - I presume the best format for audio is PCM. What is LPCM and are any other formats good/bad?