If the two videos we posted last week weren't enough to get you excited for the return of Grey's Anatomy after its week hiatus, we're pretty sure the three (!) additional sneak previews of this Thursday's new episode should do the trick!

Two of the three clips are downright funny.

In the first video, a lunch between the residents quickly turns into a fight, junior high style. In the second, George prepares for attempt #2 at the big test. Finally, Mark (who apparently knows about Callie and Erica) gets into a hilarious exchange with the ladies about it.

Great stuff. Follow the jump to watch the next two clips from this Thursday's all-new episode of Grey's Anatomy, "Here Comes the Flood" ...

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.