Must watch Anugraha Bhashanam in Tamil for 31 mins delivered by
Jagadguru Shankaracharya Sri Bharati Tirtha Mahaswamiji
upon his arrival at Coimbatore on March 21, 2012 during the Dakshina Bharata Vijaya Yatra undertaken in 2012.
Watch for Sringeri Acharya talking about Sandhyavandam at 7th and 18th minute of the above talk.
Sringeri Acharya also talks about “why do pooja and how it is related to Shankara Advaitha”
Move videos can be found at this youtube channel. http://www.youtube.com/user/sharadapeetham
I will try to translate it into English shortly.