I've been using some of the skins found here:
http://www.jpl4design.com/dialerskins.htm
All of them have a talk button, which I need as I have my green phone button mapped to my photo dialer. (I have double tab on the green button mapped to open the dialer.)
What I also like is that the buttons are in three columns with the talk/history/etc buttons on top rather than along the side. This means bigger, easier to press onscreen buttons.