Schalke are playing Moenchengladbach with both teams needing to win, though for different reasons. Schalke want to remain at the top whilst Gladbach are desperately trying to fight relegation. This will be a very important game. Bayern and Bremen will keep the pressure on Schalke by winning their games (though they both played difficult games during the week) and Stuttgart visit Hamburg for another tricky game.
The game of the week, I feel, is Aachen-Dortmund. One of the smallest clubs against one of the biggest in a must win relegation scrap. Confidence is low in Dortmund whilst Aachen have surprised a few with their overachievement. Frankfurt -Cottbus is another games where the three points are vital for survival.
This weeks games are:

Hamburg – Stuttgart 2-4
Wolfsburg – Mainz 3-2
Hertha – Bielefeld 1-1
Frankfurt – Cottbus 1-3
Hannover – Bayern 1-2
Aachen – Dortmund 1-4
Schalke – M’gladbach 2-0
Bremen – Nürnberg 1-0
Leverkusen – Bochum 1-4