For a really big picture at a very reasonable price look at the Samsung HL67A750. It is a 67" DLP with LED lighting. You can get one at Amazon for < $1800 with no tax and free shipping. I know the industry is going away from DLPs but they are the cheapest big PIX out there and they do not have many of the motion problems that plaque LCDs and plasmas. The LED lighting is good for 60,000 hours or 13 years @ 12 hours per day. Also it uses a lot less power.
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Music system
Model 990/7500/Magnepan 1.6 QRs/Technics SL1200 MK2/Aperion S-12 Subwoofer/OWA3/Sony NS75H DVD
APC H15 Power Conditioner

TV System
Large Advent Loudspeakers/ Polk center/Monoprice surrounds/Panasonic Viera 42 inch/Onkyo HT-RC260/Sony BDP S590/Directv


Home Theater System
Onkyo PR-SC886/Outlaw 7125 Klipsch RF-82 L/R,RC-62 center, RB-35 SR/SL, BENQ HT1075, Outlaw LFM1-EX/OPPO BDP-83/Directv
Harmony ONE
Blue Jeans and Monoprice interconnects
APC H15 Power Conditioner