Which is best?

is it more effective to give internal links the full path (e.g. http://www.mysite.com/docs/dvd.php) or a local path (e.g. /docs/dvd.php).

Say the link title is "DVD", it would give that term *slightly* more weight in Google if it was an absolute path would it not? as people searching "DVD" are more likely to come across "http://www.mysite.com/docs/dvd.php" than "/docs/dvd.php".

I honestly don't believe it would matter in the least. I'm sure that Google's algorithm probably translates all internal links to absolute links in order to normalize the input to whatever computations their magic machines do.

It does not matter if it is absolute or relative path.. I use relative path (/recommend/seogoogle.php) most of the time thou

I like absolute paths for the benefit of being able to shift things around and not be worried about bad links.

Also, if you're running a blog and the posts are being scraped, the absolute path means the visitor is able to get to the destination you're pointing too, so you can get benefit from leeched content.