Sure, Sony has plenty of "failed" formats, but don't forget about the infamous 3.5" FDD though. We will see how non-consumer friendly these new formats will be (DRM, copy protection, etc). Another reason why plain old CD is still the format of choice for Audio. I wonder how popular DVD would have been if the CSS encryption was never cracked. For now, I would go with blu-ray, mainly because it has larger storage potential (more future proof). With PS3, Sony will basically put a BD-ROM player into many households.