Here's where Siskel & Ebert's "Two Thumbs Up" rating system came from.
1 / 8
Ebert and Siskel were professional rivals when they co-hosted a movie review show in 1975.
2 / 8
While they became friends off camera, their verbal sparring over movies became a trademark.
3 / 8
So did their thumbs up/down rating system, which came about from necessity.
4 / 8
They needed a new system moving from an old show format, so Ebert just suggested it.
5 / 8
It became a mark of quality for many, though movies like Godzilla 98 would parody it.
6 / 8
Since both men have passed the system is retired but it remains an iconic part of their legacy.
7 / 8