Super Teacher Tools is a fun website with lots of unique tools on it. All of the tools on there can make a teacher's job way easier. For instance, the instant classroom can make it easier by not having to take the time o design a seating chart or anything like that. There are also things on there like the world population counter.
Class Tools is another cool site that has a lot of neat features. Some of the ones I thought were cool was the fake tweeter. You can type in a name and a tweet and it'll look a lot like a real tweet. It will come up with a picture that they think is that person.