I like the HSU Ventriloquist recommendation, but I'm not sure if it's the best system to "blast." It would be ideal for HT. If you want the biggest bang for your buck, I'd forget about the HDMI input for now. Component cables will work fine, and you can put the savings towards the speakers.
Personally, I'd say go with the Acoustech speakers with the sub, then pick up an Onkyo B stock receiver at Ubid. It's a tad over budget with shipping, but your buddies will think you've spent three grand on the system.
This place will beat all competitors on this speaker package.
http://www.sounddistributors.com/buynow.asp?action=detail&prid=1054&crid=165&cat_name=BIC+America+Speakers
I'd bid to $180 on this unit. It's still a steal at $200. Can you tell it's a "hot" item?
http://www.ubid.com/actn/opn/getpage.asp?AuctionId=10597017