Part One: 1-23
Part Two: 24-35
Part Three: 35-46
X-Treme X-Men: Savage Land
X-Treme X-Men X-Pose
Joss Whedon's run on Astonishing X-Men. Also, I think it's a great starting point if you're looking to get into X-Men comics.
01//02//03//04//05//06//07//08// 09//10//11//12//13//14//15//16// 17//18//19//20//21//22//23//24// Giant Size Astonishing X-Men
01//02//03//04//05//06//07//08//
09//10//11//12//13//14//15//16//
17//18//19//20//21//22//23//24//
Giant Size Astonishing X-Men
