There are a lot of these though. I know SweetPea for the most part hates immediate rematches and I've begun to hate them too. Most of them not only are worse then the first but much more one sided. Of course there are exceptions but a few that come to mind.

Barrera - Juarez II
Toney - Peter II
Mosley - Vargas II
Calzaghe - Veit II

OK I'm going to stop there I like those examples though.