Dave Cameron has several items up on Fangraphs, doing a list of the 50 players with the most trade value in baseball right now.
The top five goes Longoria, H. Ramirez, Sizemore, Wright, and Pujols, and Josh Hamilton and Ian Kinsler both make the list.
Interestingly, Hamilton ranks quite a few notches above Edinson Volquez, who also makes the list.
Anyway, some interesting stuff, worth checking out, I think...