I no longer make a weekly plan. Instead I make "Le Menu". It looks something like this:
All this is is a list of all the meals I have already prepared in the freezer or I have all the stuff to make it from scratch. This way, every morning I just look at the "Le Menu" see what my palette is thinking and we decide on that night's dinner then. After I prepare the meal I simple cross it off from my list so I know it is no longer available.
I usually have lunches and breakfasts listed on there as well so I don't have to think about what we have for them either.
This idea has worked well for me and my family. If you are struggling with getting a weekly menu on the fridge give this a try and see if it works for you :o)