Obi-Wan has always been my favorite Star Wars character. I love that he always tries to do what's right and to this day, as a 45-year-old nerd, I still ask myself on occasion, "What would Obi-Wan do?"
One problem that has never sat right with me though was the way he lied to Luke about his father. It turns out, he really didn't want to do that but instead did it at Yoda's request. There is some cutting room floor footage from Episode VI where Yoda states, on his death bed, "Obi-Wan would have told you [about the true fate of Anakin Skywalker] long ago, had I let him." This didn't make the film but gives my beloved Obi-Wan some (but not all) redemption on this point.