So I have both and yes I opened both and didn't sell either.
I have Wii Sports and Zelda for Wii and NBA 2k7 for PS3.
Initial observations - Wii Sports is freaking awesome. It's an amazing sensation to swing the remote and actually hit a ball onscreen. Haven't played Zelda yet, that's today. But the console is well built and well designed. Great console
PS3? I only got NBA 2K7 since none of the games interest me. I don't have an HDTV but I have a Dell widescreen LCD with hookups. However, I only used an S-video cable and the resolution SUCKED! I'm going to buy an HDMI and HDMI to DVI converter and see how it looks. Why doesn't Sony release a VGA cable for playstations??
Anyway, you got a question about either? Ask away.