Please visit http://imgv.sf.net/ - IMGV is a cross-platform Image Viewer. Features include slideshows, exif viewing, histograms, gamma correction, adjustable thumbnails, playlists, website image extraction, multi-dir loading, movies, and much more.
Great project! Excellent!
A bit tricky to set up - the IMGV_HOME environment variable is absolutely necessary for imgv to run, or else imgv will only run within its installation directory -, but otherwise seems like a good replacement for Win 7's built-in image viewer that randomly distorts the aspect-ratio of some JPGs.