I don't know if it's because Microsoft's extensive useability research leads them to develop things that are better for the majority and I'm in a minority, but I feel that Office help has gotten progressively less useful in every version since 97.

 

There was a time when the help files were like a manual and it was logically laid out as such - now it's all task based, which sounds good, but the steps for each task are so obvious you'd have to be a moron to not be able to work it out yourself.