AlhamdulilLah, as Sheikh Abdul Halim and Ustaz Mohd Ghazali highlighted this surah in class, I also found a video of Brother Abu Hamza who lectures about the tafseer of Surah al-'Asr.
In my humble opinion, this Surah is essential to the well-being of the Ummah (and why this blog is named accordingly). Following up from Surah al-Fateha, this surah reinforces Tazkiyah (Purification of the soul), the need to have the belief in the power and wonder of Allah SWT, perform righteous works, encourage each other towards the Haq (Truth) and encourage one another to Sabr' (Patience). To do these, one needs to seek 'ilm. Truly, niat + amal = ibadah for the love Allah SWT.
Afternote: One can never tell when is his or her last breath. And if one can constantly introspect and ikhtiyar to improve on his or her own akhlaq and behaviour, he or she will naturally be a role model to others; Leave the judging rightfully to Allah SWT. Truly, this is the best way to approach da'wah.