Pullman said he was really pleased the books were being turned into a radio series.
They are already being made into a stage play in 2004 and there is talk of Northern Lights being made into a film.
The same film company responsible for The Lord of Rings trilogy has already bought the rights to make it.
Who knows, the films could be bigger than Potter!
But for now, you can hear the series when it is broadcast on BBC Radio 4 on 4, 11 and 18 January 2003.