eden, agree with you about "Kanne Kalaimane" song. It (Surumai Akhiyon mein) was very popular in Hindi aswell. Many many northies like the song. regarding "Ai Zindagi", I liked both the tamil version (Poongatre) and the hindi version equally. I have seen Suresh Wadkar sing this song as one of his favourite in many shows. Again, as you said, Poongatre is very innovative.
"Ponmeni" is retained in hindi aswell. The song is "Eh Babua" or something like that. Its the same tune and I think its sung by Asha Bhosle. This song was no so popular I guess.
As far as I know, from "Sadma", the song "Surumai Akhiyon mein" and "Ai Zindagi" were very popular (especially the latter one)
Krishnan
