If you need a cheap/excellent backup application look no more. There is SyncBackSE from 2BrightSparks. This backup application is created in the same way I would create it. It has tons of features (worth mentioning synchronization feature – you can keep folders and files synchronized between computers) and it is dirty cheap. So, if you are not already doing backups (ouch!) or you are doing them with some other less useful tool you have to check this one.