UnPacker is a fully automated extracting tool. This is not a WinRAR or WinZIP replacement but quite a useful utility when you want to extract large quantum of archives.
The program makes a queue of every rar added to the list and extracts them one by one. This way you can peacefully play your games (or sleep) while extracting. It also has optional functions to cleanup (removing archives after extract).
You should try it, it is free and youll get a notice when a program update is available to ensure youll always have the latest version. Other functions like minimize to tray, thread priority, etc. are also available.
New functions like ZIP support, add archive in archive directly, and many small extra features that could make your extraction more easy!