I watched the video. Tim Keller has a style that is very enjoyable to listen to, he is the most llikeable christian apologist I have heard in a long time.
The content of what he had to say was predictable stuff.
A sophisticated version of Paley's watch
A horribly illogical version of Pascal's wager - basically since its impossible to prove a negative (god does not exist) being an atheist requires faith in exactly the same way as a believer and so on.....
A lot of variations on "I don't know" whenever the question was awkward.
Unbelievers and all non-christian beleivers and gays are going to hell but he almost manged to spin it to make it sound entirely reasonable.
Full marks for style - fail on substance