1) What's the deal with Darth Vader being able to breathe while he talks? Is he like one of those people who's had a tracheotomy or something and he can breathe and talk at the same time? Or is there some device in the mask that allows this?

2) How come in the first 5 minutes of ANH, C3PO says, "There'll be no escape for the princess this time..." and yet, 20 minutes later when he meets up with Luke and R2D2 is playing the vieo of Leia, C3PO has NO idea who she is?

3) Okay, about another 20 minutes into ANH we meet Obi-Wan who, given he is an old man...perhaps loosing his marbles, has no recollection of ever seeing R2D2, yet they clearly met in TPM? (I'm assuming this is just a failure in continuity...)

4) Doesn't Obi-Wan claim Yoda as his master in one of the original three? Yet we know that's not the case...clearly Qui-Gon was Obi-Wan's master. (Another lack of continuity?)

2. In the radio play, the droids are told by Princess Leia not to reveal their owner to anyone.

3. Obi-Wan could have been lying, or he never actually owned R2, and he just looked like any old droid to him (like all the ones we saw in TPM).

4. At the beginning of TPM Obi-Wan refers to "Master Yoda." I guess he had two masters.