It's a bit large, but it gets the job done. Not extra features, but for scanning and copying (or printing to PDFCreator) it's the only GPL windows solution I've found that's easy to use.
If it works for you, great! It crashed for me on vista 64 (I do have .net 4.0 pre-release installed). The first page scanned fine as 'Black and white picture or text' through my Brother MFC-490CW Document Feeder, but ScannerCopier then freezes up complete (window wont even move!).
There are no 4 star reviews.