Post specific widget

Hi there,

I was wondering if there is a plugin, wich makes me able to have specific widgets per post.

Its probably smart to show an example: http://www.techzine.nl/reviews/833/command-en-conquer-4-tiberian-twilight.html
At the left there some info like a rating, info and more. ( I know this isn’t WP, but just to get the idea )

So is there any WP-plugin that allows me to have a widget ONLY at the specific post I want them to show?

I hope its clear:)

Thanks in advance!