I have one on my walls as well, though the most I get off it is a motivational boost.
At the end of the day, after Im done adding newly learned kanji, I mark my last learned kanji with a nice little red circle. That way I can instantly see where I am 'on the big list'.

Its nice when you see yourself progressing down the chart, its nice when you realize you dont have to climb on the table any more to mark where you are (@1755, yay!)

For the learning department... I look at the poster every now and then, and try to translate a few kanji. So I guess it offers a few more daily reviews, though thats for me more of a bonus - the main use for me is purely motivational.
Well, and kanji are pretty ^^, so the poster in general looks good on my wall

Codexus posts always make me :-)

This is what I did in the past and I found it interesting and effective:
First, I didn't buy a Kanji poster, I made it myself with Excel 2007 (included in Microsoft Office 2007), but not with all Kanji from RTK1 on it, only about 95 or 100 ones (my error when editing the printable file).
Secondly, I stuck it on to the wall with some easy-to-use glue or anything help this task out, near the place I often crossed, especially above the place I drink.
Thirdly, every time I walked across or drank water, I would look into it, to any Kanji u want, I find it a very interesting task, I thought I can remember all of them through looking them day by day.

But everything bad happened when I printed the global Kanji Poster (may I use this word), I found it rather tough to review b/c it's too large, not-easy-to focus on what we want, and Kanji size was so small. Plus, cause I couldn't stick it near place I often walked across.

Final, I want to share with u this tip: Only doing it after u tired of doing something else, hold a cup of coffee or the favorite beverage and look at it, when u find that u are doing nothing more useful that it, u will learn easily, effortlessly (a little tough though).

GOooook Luck!