I'm watching the season, too...
I think it's the best ever made... Because the story about Izzy... and the story about Christina and Hunt is really great.
But there's something i found very confusing... Why do they introduce so many new doctors?? That's so disgusting.
Okay but that's not the reason why i found it a bit silly. I found it a bit silly because at the moment everyone is so depressive and sad. Look at Derek. He thrown Meredith' ring away. That's so bad...
But the Story and everything in season 5 is great!!!