Last time I was in EB Games, on a whim, I asked the guy if they had used component cables for the Gamecube. I think people are turning them in with the $50 credit towards the Wii thing. I scored them for $5 bucks! I should have asked if they had more, I could have made some quick $$ on ebay.
If people knew how much they're worth now, they could've got the $50 for the cube and sold the component's on ebay for $30-$60 and ended up with almost $100 off on the Wii.