The only thing I hate about the EU are the forced ties between the OT and PT. Granted, some things deserve exploration (Leia's relationship with Bail Organa), but some later books have contradictory stuff just to give the OT a closer tie to the prequels. For instance, there exists one EU novel out there where it's stated that R2 recorded that conversation Anakin and Padme had about his nightmares, and then he plays it for Luke.
R2's kind of nosey, if that's true. I mean, unnecessarily recording a private conversation? That's kinda weird.