I recently purchased the Genesis 1970-1975 boxset. It contains the first 5 albums newly remastered and remixed. Each album comes as a CD and DVD. The DVD has the new 5.1 surround mix in DTS.
The DTS surround mix sounds absolutely gorgeous and really makes the music sound fresh. The "Lamb" is the only disc that also contains a pretty cool slideshow while playing the album.
There's a pretty good review at allaboutjazz.com: http://www.allaboutjazz.com/php/article.php?id=30869