The worst scene in the entire saga (yes, worse than jarjar) has to be that awful reunion scene on the rebel fleet in ROTJ. Please, shorten/cut that one. You know, the moment Luke shows up and decides to join Han and Leia... everyone starts smiling and hugging and laughing... *shivers* it's just like watching a bloody soap opera. It always felt out of place and very un-Star Wars to me.
I never got why they were so emotional anyway: they saw each other on Tatooine right? Luke went to visit Yoda after that, but as Yoda died not much after Luke arrived, it seems hard to believe Luke would stay there a few extra weeks before joining up with his friends again.