"Sat Sri Akaal" is used by Sikhs throughout the world when greeting other Sikhs regardless of their native language. For instance, two members of the Punjabi Diaspora who exclusively speak English may still greet each other with this blessing, although this is by no means universal.
The usage of Sat Sri Akaal as a greeting, although used by the majority of people who identify themselves as being Sikh, is regarded as incorrect usage by Amritdhari (Orthodox) Sikhs, as the term is historically the second half of the Sikh war cry, "Bolay So Nihal, Sat Sri Akaal", and is still used in the same way. As per the Sikh Rehat Maryada, or Code of Conduct, Amritdhari Sikhs greet each other with Waheguru Ji Ka Khalsa Waheguru Ji Ki Fateh, meaning "The Khalsa belongs to God, Victory belongs to God".
Sat Sri Akal is the name of an upcoming Punjabi religious movie soon to be released in the month of October 2008. It boasts of an impressive starcast and also has melodious shabads sung by leading playback sngers of the Bollywood namely Jagjit Singh, Alka Yagnik, Kavita Krishnamoorthy, Sunidhi Chauhan and also Late Ishmeet Singh in his first and last playback in films. For more details refer www.satsriakalmovie.com