Mohammad Seyfi (محمد سیفی) has been a Actor in some movies:

Under the Skin of the Night is about that In one of his daily wanderings, Ghassem Siah, a young joble ...ss guy who leads a street life, runs into a young American tourist girl who is spending her last day in Tehran. Without understanding each other's words, they strike up a friendship and the girl accepts to sleep with him. But Ghassem doesn't have a place of his own and the girl is to depart by the next morning. Together they set off on the glistening yet hostile streets of modernizing Tehran of the 70s, in a futile search of a corner of intimacy, while time is ticking away.... In this film Mohammad Seyfi (محمد سیفی) collaborates with Nematollah Gorji (نعمت‌الله گرجی), Mehri Vadadian (مهری ودادیان), Majid Mozaffari (مجید مظفری), Fereydoun Gole (فریدون گله), Mohammad Khalilzadeh (محمد خلیلی زاده), Fereydoun Farhoodi (فریدون فرهودی), Ali Torabi (علی ترابی), Barbod Taheri (باربد طاهری), Amir Tajik (امیر تاجیک), Morteza Aghili (مرتضی عقیلی), Arash Taj (آرش تاج), Abbas Ahmadi (عباس احمدی), Masis Manookian (ماسیس مانوکیان), Asghar Kefayati (اصغر کفایتی), Ali Dehghan (علی دهقان), Jahangir Salehi (جهانگیر صالحی), Soleiman Akbari (سلیمان اکبری), Soozan Gilbar (سوزان گیلبر), Nezamodin Shafaee (نظام‌الدین شفایی), Farhad Farhadi (فرهاد فرهادی), Zaven Ohanian (زاون اوهانیان), Roohi (روحی)

White Gold is about that Etemad owns a cabaret in which they smuggle drugs too. The husband of Fariba the singer of the cabaret is getting killed. Now his brother Amir is back from America to find the murderers and get revenge. In this film Mohammad Seyfi (محمد سیفی) collaborates with Mohammad Ali Fardin (محمدعلی فردین), Zhaleh Olov (ژاله علو‎), Rogheyeh Chehreh Azad‌ (رقیه چهره آزاد‌), Asghar Bichareh (اصغر بیچاره), Fakhri Khorvash (فخری خوروش), Rubik Mansouri (روبیک منصوری), Kazem Rajinia (کاظم راجی نیا), Akbar Hashemi (اکبر هاشمی), Jamshid Sheibani (جمشید شیبانی), Homayoon (همایون), Gholamhossein Mofidi (غلام حسین مفیدی), Firouz Dadashpoor (فیروز داداش پور), Gregory Marc (گریگوری مارک), Vahak Vartanian (واهاک وارطانیان), Pooran (پوران), Karim Fakoor (کریم فکور), Ali Delpazir (علی دلپذیر)

The Law of Life is about that The owner of a village is a woman who treats the villagers with cruelty. Jabar, owner's foreman, whips the villagers on his orders so that they are always obedient and unruly. The owner of the village is interested in the village youth and prevents him from marrying his favorite girl Golnar. Jabar steals Golnar, and this causes the young villager to rebel against the owner. In this film Mohammad Seyfi (محمد سیفی) collaborates with Ahmad Ghadakchian (احمد قدکچیان), Rubik Mansouri (روبیک منصوری), Abdollah Mohammadi (عبدالله محمدی), Kazem Rajinia (کاظم راجی نیا), Khalil Rafe (خلیل رافع), Jamshid Sheibani (جمشید شیبانی), Azar Shiva (آذر شیوا), Abbas Montajem Shirazi (عباس منتجم شیرازی), Akbar Khajavi (اکبر خواجوی), Yadollah Shirandami‌ (یدالله شیراندامی‌), Vahak Vartanian (واهاک وارطانیان), Mahin Moavenzade (مهین معاون زاده), Azizi (عزیزی), Mohammad Sobhani (محمد سبحانی)