Cool Portable book reader: Sumatra

I tried dozen readers today, and this is first one I liked, so I'll share the link.

It reads number of formats of interest to me: CBZ/CBR, CHM, ePub, Mobi and PDF, and is barely 5 MB in size.

http://blog.kowalczyk.info/software/sumatrapdf/download-free-pdf-viewer.html

Thanks to Vedmak.