I have the perfect thing for when this happens. Donald Maass does this thing on twitter called Breakout Thursday where he posts prompts, things you can do to your story and characters to make things a whole lot more interesting. There are also prompts that will help you improve your writing and make you look at scenes in a different manner. Seriously, go check it out.
http://tinyurl.com/3l33uhm (I save the prompts in a post on my blog to make it easier to find)
Hope it helps.