An atheist funeral would be nice, i'd imagine. Staying clear of the theological stuff, just talking about the person. The witness funerals i've been to were just another chance to squeeze in more crap about everlasting life and hope for the dead, the person came second. Always.
Heck, at the burial of my aunt's ashes (who was never a witness), my father (the only witness on that side of the family) spent a good 10 minutes telling them about how she was going to be resurrected and armageddon wasn't far off. I was so irritated that he had to bring in religion.. not even HER religion but HIS. Completely unnecessary and disrespectful. I'd have thought the same even if I was still a dub.