Often you want a view to be nicely formatted and be a set height amount.
This is how to do it.
=IF(LEN(Description)>140,CONCATENATE("<DIV>",LEFT(Description,140),"<a href='http://SPSite.com/Site/ListName/_layouts/FormServer.aspx?XmlLocation=/ SPSite.com/Site/ListName/",Title,"&Source='http://SPSite.com/Site/ListName/Item&DefaultItemOpen=1'>... (click here for more)</a></DIV>"),Description)
Pretty easy code to put in a view.