I recently discovered three published authors who have very short (15-20 pages) free e-books on thier websites.  The ones I've read are either stories of secondary characters from a series, or just a short vignette on a major character.   Here they are:

Sherrilyn Kenyon:  http://www.dailyinquisitor.com/sherrilyn/intro.htm

Sandra Hill (2):  http://www.sandrahill.net/novellas.html

Maria Snyder (Poison Study):  http://www.eharlequin.com/article.html?articleId=1257

Does anyone know of more of these?  They're a good length for those lazy afternoons at the office :-0 

Thanks Tricia.  A little surreal seeing you on two different forums!