The Inferno 3
Free Agents
The Ruins
Rivals 1
The Island
The Gauntlet 2
Cutthroat
Battle of the Seasons 2012
The Gauntlet 3
Battle of the Exes 1
Rivals 2
Fresh Meat 1
Fresh Meat 2
The Duel 2
Vendettas
The Gauntlet 1
The Inferno 2
Battle of the Sexes 2
Battle of the Bloodlines
All Stars
Still need to see:
Real World vs Road Rules
Challenge 200
Extreme Challenge
Battle of the Seasons 1
Battle of the Exes 1
The Inferno 1
The Duel 1
Battle of the Exes 2
Rivals 3
Invasion of the Champions
XXX: Dirty 30
of all The Challenge seasons I have seen