actor (2)

1982	Tenebrae	Narrator / Murderer's Hands (voice) (uncredited)	7.00
1977	Suspiria	Narrator (voice) (uncredited)	7.30

director (3)

1985	Phenomena		6.70
1982	Tenebrae		7.00
1977	Suspiria		7.30

writer (4)

1985	Demons		6.60
1985	Phenomena		6.70
1982	Tenebrae		7.00
1977	Suspiria		7.30

producer (2)

1985	Demons		6.60
1985	Phenomena		6.70

composer (2)

1978	Dawn of the Dead		7.80
1977	Suspiria		7.30