Originally posted by: Gaffer Tape
What would you have him do? Have Luke, etc. wandering around the Death Star, and then cut to a little musical number with Yoda on Dagobah, singing, "Stayin' Alive" just so you know that he's... alive?

Actually, there is a place where he would fit extremely well. After Alderaan is destroyed, Obi-Wan feels the disturbance, and sets down. A scene could be added directly before (or directly after) this moment, where Dagobah is once again established, and Yoda senses the destruction just as Obi-Wan does.