How many movies have Koki Mitani and Masahiko Nishimura collaborated on?

They have worked on 8 movies together! Their first movie together was 古畑任三郎 笑うカンガルー (1995) while their highest rated movie together was Furuhata Ninzaburo vs SMAP (1999). They have not worked together since 東京サンシャインボーイズ『returns』 (2009).