Yesterday I spent quite a bit of time on YouTube watching Shaykh Khalid Yasin (a former christian turned muslim) talk about the purpose of life for all of mankind.
The speech is an excellent refresher for me, tells you as it is and what you're here for. Shaykh Khalid Yasin really knows his stuff, I've watched his other question and answer videos and I'm impressed.
Each video is 1 of 11 and approx 10 minutes, definitely worth the watch.
Part 1
Part 2
Part 3
Part 4
Part 5
Part 6
Part 7
Part 8
Part 9
Part 10
Part 11
I think that's enough linking to YouTube for the day.
Always remember you research into who you are listening into before following. Word of advice, not too keen on people coming on TV ginving dawat, you know why!