The_Gneech
Explorer
Red Hand of Doom has several dragon "boss fights," as well as
...
-The Gneech
facing an aspect of Tiamat as the climax
-The Gneech

Right at the beginning of 3e there was an awesome slay the white dragon module that featured the dragon's half-dragon son as an ally. I never played it, but it sure looked cool.
What are the classic dragon adventures?
O1 - Blade of Vengeance. This is all about the dragon, and is perhaps the best example I've seen from the older TSR modules. It's designed for a single player (no, it's not a solo adventure - it's for 1 DM + 1 player). Having said that, it's easily adaptable to a group and has a lot of forest/fey/elven goodness.