ESPN has an article up on it's internet site about the 5 fights that is good for business and the 5 fights that is good for fans. It's titled "Monday Hook: The wish list and the get-rich list."

In the article, it explains why and lists the top fights in the categories.

Get-Rich List:

De La Hoya vs Mayweather Jr. II (oh god no!)
Klitschko vs Klitschko (will never happen!)
Calzaghe vs Roy Jones Jr. (I don't think this fight would do as well as ESPN thinks)
De La Hoya vs Pacquiao (Oscar need to retire!! BADLY! I get upset everytime he fights)
Cotto vs Mayweather Jr. (PLEASE HAPPEN! WE NEED THIS!)

Wish List:

Cotto vs Magarito (SO EXCITED FOR THIS ONE! This shouldn't be on a wish list because we are actually going to get this.)
Pacquiao vs Valero (I would rather see him fight Marquez again. But this should only happen if Valero fights, wins, and does well against a name. Possibly Juarez or Soto because they seem to be a good barometer.)
Pavlik vs Abraham (This can happen too!)
Vasquez vs Marquez IV (I think these two should move on for the sake of their health. But if they do fight again, I'll sure be watching.)
Katsidis vs J. Diaz (Even though they both lost their last fights, I would want to see this. It would be a slobberknocker! That's right, I said "slobberknocker.")