Walter Röhrl was/is great. But so was/is Vatanen(nr1 imo) , Blomqvist, Mikkola, Salonen, Toivonen(RIP) , Alén and for example Juha Kankkunen:
Look at his collection nowadays:
http://www.insideline.com/features/t...-pictures.html
This is Vatanen onboard, Manta 400 GR B rwd:
From 1:49....incredible:
You also have to hear the navigator!