I just finished reading the whole 'Who is Deadpool?' storyline, I really liked it. Thought the whole T-Ray/Deadpool interaction was great and it is slightly confusing toward the end but 'Cable & Deadpool' clears up the whole thing.
Spoiler
"Many years later Deadpool's nemesis T-Ray accused Deadpool of killing his wife and stealing his identity after a failed mission, but Deadpool's restored memories revealed this to be a lie; in T-Ray's account Wade was wearing his Deadpool costume, which he didn't have in till after he joined Weapon X."
-Marvel.com
Loved the Joe Kelly run so much.
Issue 34 and Christopher Priest's run here I come!