I found a slightly disturbing thread the other day at WebmasterWorld named Duplicate navigation links downsides? You know how many sites have a form of graphical navigation for those who find graphical links more appealing and then at the footer, the site normally has alternative text based links to the same pages? I am sure you have seen it before, it is all over the place. In addition, many forums have the bread-crumb trail navigational text links at the top of the page and at the bottom of the page (a feature I love, I hate scrolling back up - hint SEW).
These are all examples of having the same link on the same page more then once. Is there something wrong with it? The thread creator said, "I'm afraid that can hurt in any way my rankings since links will be basically duplicated." I assume this thought process was triggered due to the volume of discussion on duplicate content issues that have taken place in the recent history. But having two of the same link, pointing to the same page, and if it is of use to the end user, will not hurt your rankings. In fact, they may help with getting your site indexed and ranking you higher (due to the anchor text).