The producer and director died on 6 September (11) at the age of 89. Morgenstern made his name directing films Goodbye, See You Tomorrow (1960), Jowita (1967) and We Have to Kill this Love (1972).
His funeral was held in Warsaw on Monday (12Sep11) and Polanski was on hand to pay a touching tribute to his late pal, who he'd met while they were both students at the Lodz film school in Poland.
Speaking at the televised memorial, Polanski said, "For me, he was not a representative of the Polish film industry. He was simply my oldest friend. I just want to say to him: 'Goodbye, my friend'."
The Rosemary's Baby director, who was born in France but raised in Poland, made the appearance just days after shunning an invitation to attend the Venice Film Festival in Italy, where his new movie Carnage had its world premiere earlier this month (Sep11).
His decision was reportedly based on the legal battle which ensued after he was arrested at the Zurich Film Festival in Switzerland in 2009. He subsequently fought extradition to the U.S. to face court proceedings linked to a 1977 sex case.
He was allowed to walk free following several months of jail time and house arrest at his Swiss chalet after the extradition bid fell apart.
Polanski was able to attend the funeral of Morgenstern because officials in both Poland and France have promised not to extradite him.
The director was arrested and jailed in September (09) in relation to 32-year-old child sex charges in America, and he's currently fighting extradition to the U.S.
Earlier this week (begs23Nov09), Polanski was granted a bail request and will spend Christmas and the New Year under house arrest at his alpine chalet in Gstaad.
And now his former cellmate, Yussi Akram, has told a Swiss radio station the exiled The Pianist director was the envy of fellow prisoners - because he was allowed to call his wife and attorneys frequently.
And his cell was equipped with a special emergency button he could use to summon guards.
But the moviemaker's longtime friend Janusz Morgenstern has told a Polish radio network that Polanski's two-month prison stay has taken its toll on the director: "His fear of the U.S. verges on panic and he has lived with that fear for so long that it's become obsessive."
Morgenstern reveals his pal has become severely depressed and has lost a considerable amount of weight behind bars.
Polanski was found guilty of molesting a 13-year-old girl at a Hollywood party in 1977. He fled to Paris, France on the eve of sentencing in 1978.