I'm a bit late to the party here (price is now $500) but I can't help but wonder if its worth buying a 'cheaper' laptop? $450-$500 doesn't get you into amazing specs, but certainly respectable for what you're looking for.
One quick example
Asus Notebook at BestBuy $350
Comes with HDMI (home theatre PC!) and a mid-range Nvidia video card with 1GB of dedicated memory.
Just a thought.