"John Campbell hasn't just been a presenter, he's been a mentor to young reporters across the newsroom, a journalist, a storyteller, a friend and a valued member of the RNZ team" - newsreader Katrina Batten.
We look back on some highlights from his time with Checkpoint, including laugh-out-loud moments and scenes you've never seen before. RNZ staff even made a song for him...
Listen to John Campbell's final – and 650th – of Checkpoint here:
Watch John Campbell's final – and 650th – of Checkpoint here: