They managed to defeat (but not kill) Yashamaru, who is a freaking CHUUNIN. Perhaps that says more about him than the lot of them but it's still impressive.
Naruto, Haku and Gaara successfully retrieving a very important medicinal herb from the Mist village hospital and saving Sasuke, Sakura, Neji, Hinata and Sai's lives.
Sasuke and Kimimaro give Zabuza a run for his money during the fight on the bridge and Naruto manages to mostly fight Kakashi all by his lonesome.
Haku turns Isaribi onto the side of good during her fight. Also a Heartwarming Moment.