http://googledocs.blogspot.com/2011/07/zip-and-rar-support-now-available-in.html
A great expansion of the coverage within Google Docs Viewer. List of supported doc types for the Viewer is now:
Microsoft Word (.DOC and .DOCX)
Microsoft Excel (.XLS and .XLSX)
Microsoft PowerPoint (.PPT and .PPTX)
Adobe Portable Document Format (.PDF)
Apple Pages (.PAGES)
Adobe Illustrator (.AI)
Adobe Photoshop (.PSD)
Tagged Image File Format (.TIFF)
Autodesk AutoCad (.DXF)
Scalable Vector Graphics (.SVG)
PostScript (.EPS, .PS)
TrueType (.TTF)
XML Paper Specification (.XPS)
Outstanding. As soon as Docs can master the mystical art of columns I'll be sold :thumbsdownsmileyani Still these are all nice additions. They're getting there.