First, set your budget. From a quick google, it looks like this so far:
Pioneer Kuro PDP-5080- $2700
Blu Ray - Pana DB-35 - $400
Sony DG-820 - $300
5.1 speakers?????
I'll try to pick parts within the same price from what you were originally saying:
1 TV: Pana Viera TH-50PZ800U - $1900
http://accessories.us.dell.com/sna/productdetail.aspx?sku=A1837857&cs=04&c=us&l=en&dgc=SS&cid=30098&lid=674095
Blu Ray - If you are going to spend $400, get a PS3. More functions at the same price.
Receiver: Lots of options. @ $300, you have to look around for the inputs that you want, and get as many as you can if you want to run it all from the receiver.
Marantz SR5002 - $300
http://www.accessories4less.com/make-a-store/item/MARSR5002/Marantz/SR5002-receiver-90w-x-7ch-HDMI-home-theater-surround/1.html
Onkyo TX-SR606 - $300
http://www.accessories4less.com/make-a-store/item/ONKTXSR606SLV/Onkyo/TX-SR606-90w-x-7ch-HDMI-Theater-Receiver-SILVER/1.html
IMHO, the Onkyo might have a few more options for you for the price. I would get that.
Speakers: This is a tough one. Depends on a lot of things, starting with the size of your room, what you will listen to, style, budget constraints. Since there is an $800 diff, between the TVs, let's say that $800 is your budget.
For a satellite system:
Energy Take 5 - $600
http://www.energy-speakers.com/na-en/products/take-classic-5-1-overview/
KEF KHT1005.2 - $500
http://www.accessories4less.com/make-a-store/item/KEFKHT10052GB/KEF/KHT1005.2-5.1-Sattelite-Subwoofer-Speaker-Package-GLOSS-BLACK-/1.html
Jamo A320HCS6
http://appliancebestbuys.com/index.asp?PageAction=VIEWPROD&ProdID=81361