Train Your Accent:  Nice site that allows you to practice conversation, and assists with accent reduction.  http://www.trainyouraccent.com/

 

Real English:  Has many interesting lessons via video to help you with conversational English.  

http://real-english.com/home.asp

 

ESL Gold:  Great site with some wonderful speaking assistance and content.  http://www.eslgold.com/speaking.html