Bob Irwin speaks during a memorial servi

BEERWAH, AUSTRALIA: Bob Irwin speaks during a memorial service for his son, Australian environmentalist and television personality Steve Irwin, at Australia Zoo in Beerwah, in the Australian state of Queensland, 20 September 2006. Family, friends, fans and movie stars bade a final farewell to "Crocodile Hunter" Steve Irwin in a high-energy memorial service fuelled by laughter, tears and music. Irwin, known as the "Crocodile Hunter", was killed 04 September by a stingray barb during a diving expedition. AFP PHOTO/POOL/DAVE HUNT (Photo credit should read DAVE HUNT/AFP via Getty Images)