Joomla: How to get componant (or module) variable from an other module
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I work on a website on Joomla 2.5.6 (Apache+MySQL)

I have a page with an article in the main position and I have another position on the side with a customized content.

I need to get, for exemple, the title of the article in the module on the side, how can I do ?
Can I retrieve, in the custom module, the same instance of view or controller used for the article ?

I need to know it to make a sidebox with article's title, anchors, and specific links to video and PDF related to the article diplayed.

Thx