Great presentation Bart! I've got a weak spot in my heart for physics, particularly the big unanswered questions. You've summarized the contents of several physics books I've read over the past few years (for the layperson) into a concise and entertaining presentation. Would have loved to hear you present it.

I'd be curious what your views are on M/String Theory, particularly in light of its current lack of testability.

I normally don't point out typos, but the following significantly change the meaning of what I think you're trying to convey:

p 22 - I think you meant to say "The Effects of SR are summed up..." rather than "The Effects of GR are summed up..."

p 23 - I think you meant "Special" rather than "General" in the first two bullets

Of course I could be all wet here and have completely missed your message on these two pages

Happy Computing!