For those who want to see comets with the naked eye it could be this year 2013.
Comets Panstarrs and ISON are predicted to become bright at the evening sky. Comet Panstarrs mid March and comet Ison end of November at Northern hemisphere.
See also webpages Heavens-Above and http://www.aerith.net/comet/weekly/current.html - see also interesting links via my blog.
Current observations show Panstarrs magnitude around 8 and expecting to get as bright as magnitude 3.
