im trying : http://wasabi.pbwiki.com/Related Entries but the parameters don't work.. now its just a line of related posts and looks unorganised.
The best is If You Liked That, its easy! You can show related posts randomly, according to dates, according to categories, tags and what not. You can show them below posts, above posts, in the sidebar without messing with the code in any way. Download it here http://wordpress.org/extend/plugins/if-you-liked-that/ if you want a simpler one, then use the similar post plugin by rob.
For: http://wordpress.org/extend/plugins/if-you-liked-that/ How do you add bullet points next to each link?