Hey guys, in response to the comments about the PSN downloads.. if you check the wording out, I'm pretty certain it says you can download to 5 consoles, not download 5 times.
Also, you can activate your PS3/PSP's in your account preferences. So theoretically, if you deactivate the old PS3 from your account, and activate the new one, you should be right to download.
I think it works much the same as the iPod and iTunes store. You can play your downloaded music on five machines, at one time, but if you sell a machine and buy a new one, you can deactivate the old, and activate the new, and away you go.