This is my HT room Let me fix the links..
There is about $34,000 worth of stuff here but I didn't pay that much because I bought many items used or on discount.
Some items purchased brand new at discount. Some ebay, some full price.
I put prices... retail/my price
L/R: Legacy Focus SE Pearl Black $9000/5000
Center: Paradigm C5 $5000/2500
Surround sides: SA-15R Ceilings $1200/600
Surround backs: SA-15R-30 Ceilings $1200/600
Sub: Velodyne SPL-1000 Series 1 $1100
Sub: SVS PB13-Ultra. $1600
AVR: Pioneer Elite SC-05 $1800/600
Mains Amp: Bryston 14B SST $6000/3500
BluRay: Panasonic BMP-BDT210 $200
Plasma: Panasonic TH-65PZ850U (65") $5995/3500
Cabinet: Salamander Synergy $1600
My room is 25 x 25 and I used one side for the HT. Not the best but it ended up pretty darn awesome. I used all Paradigm ceilings.
SA-15R for front surrounds and SA-15R-30's for the rear surrounds. The SA-15R is down firing and the -30's are angle fired at 30 degrees.