Nadeem was in a Bollywood film - I can't remember what this film was called but I think that Anita Raj was also in it. It was a pretty dire movie and Nadeem's role was very bad.
But on the subject of general Pakistani movies there have been some real gems - a few that spring to mind are Naela (*ing Shamim Ara), Lakhon Mein Ek (later re-made in India as Heena), Koel (Noor Jehan), Intezar (Noor Jehan), Zehr-E-Ishq (Noor Jehan - banned on it's initial release), Heer Ranjha (Punjabi version - probably the best version of this film), Behist (Nadeem), Qatil and Saheli (Shamim Ara).
I haven't seen a whole load of Pakistani movies - but I have found that many of the films from the 50's and 60's were way ahead of their time - and they really pushed the boundaries of what would be considered decent and acceptable in Hindi movies - it was generally accepted that the heroine could wear revealing clothing etc. Another interesting thing that I found when watching Pakistani movies is that a lot of photography techniques that were used were pretty strange

and these types of techniques were not used in Hindi movies until the 70's.
Finally the music and lyrics from the majority of movies from these two decades was mind blowing.
Many great music directors (Rashid Attre), singers (Noor, Jehan, Iqbal Bano, Farida Khanum, Naseem Begum, Mehdhi Hasan, Ghulam Ali, Runa Laila) and lyricists (Faiz Ahmad Faiz) lent their talents to film music creating some unforgettable masterpieces of Pakistani film music.
As far as the best Pakistani movie - I would have to say I personally enjoyed Naela - I found that even though it had a very simple story line the treatment was excellent. What starts as a light romantic musical soon turns in to a dark moody film - with a tragic ending.
I have not seen any Pakistani movies from 1980 onwards and have little or no knowledge on how these films are. I have only seen snippets of songs here and there and I have not been impressed with what I have seen. I found out that there is a book about Pakistani cinema that has been published by the Oxford University Press - I am trying to get hold of this - if I do and I find any intersesting bits and pieces I'll post some info on Zulm.
Hope that this helps - sorry for going off the subject a bit.
Muz.