I'll try this again since my comp just crashed.
In Star Wars Tales
#5 (I think), there's a short story explaining ESB in light of the 3P0/Vader connection. It's actually a fairly good explanation.
Vader recognized Threepio, he just didn't acknowledge him because "Anakin Skywalker" was dead.
"We'll have the droid scrapped."
"Give the droid to the wookiee. He cares for it."
It's like I always say: When the going gets tough, the tough . . . switch to artillery.
[This message has been edited by Flying Beastie (edited August 01, 2001).]