Click to enlarge.
This chart compares per-game point production to cap hit for NHL forwards who played at least 41 games this year. Click on it to get an expanded, sharper version where you can see the individual players identified more easily. Here are some of the things that stand out to me:
Daniel Briere is often mentioned as an overpaid player. This is probably fair when you factor in his defensive weakness and the relatively advantageous offensive situations he was given, but in a strict points-per-dollars calculation he seems to be exactly average.
The Flyers had four players who produced more points than you would expect for their pay -- Ville Leino, Claude Giroux, James van Riemsdyk, and Jeff Carter. All four of them were on RFA contracts. Keep that in mind the next time you want to argue that the Flyers can get by without draft picks.
Nikolay Zherdev is often identified as grossly underpaid, but because of his low assist total, he actually shows up as having produced fewer points per game than you would expect for $2M.
This chart suggests that the Flyers estimated that Jody Shelley's fighting skills were worth about $3M. Someone with his point production is worth about -1.9M, and he was actually paid 1.1M. Dan Carcillo's fighting skills were valued at about $2.5M.