I've just finished listening to the radio drama, and I absolutely loved it -- which is kind of surprising, really, because I've always had a hard time listening and getting into audiobooks, which aren't too different from radio dramas (I guess the use of multiple actors with different voices makes all the difference *shrug*) .

The only -- small -- problems I had with the drama were that some of the dialogue didn't sound all that natural (Leia's "my Alderaan" bit following the destruction of her homeworld is a perfectly hokey example) and that the actor who played Vader sounded too much like Frank Langella holding his nose.

Anyway, I'm definitely going to give the TESB radio drama a listen after this.