yeah, i always thought that Anakin's body was still in the suit as well. I mean if it wasnt Luke should have kept the Vader suit cause it would be cool, he might eventually grow into it

but seriously, I figure that (well after it was made so that the force ghost thing wasnt something anyone could do) Anakin just figured it out. I mean what do you think he does while sitting in that meditation chamber of his, my guess would be meditate

. Actually, directly after Episode I i figured that the reason Qui-Gon didnt dissappear was because he didnt 'prepare' himself. Yoda passes into the force when he 'dies', Obi-Wan wasnt really cut in half, i always saw it as he vanished 'before' (maybe as) he was struck down, I mean it was his choice to 'be killed' i could have blocked that swing, probably could have even held off longer even if he wasnt able to ultimatly defeat Vader.

Ultimatly the 'explanation' of Force Ghosts and all that actually make the whole thing more confusing imho.

Also, do you have a link to that interview.

-Darth Simon