Okay, so the greatest of all time Olympic torch lighting wasn't 4 years ago, it was 16... Here are the last few torch lighting ceremonies embedded from YouTube. If you've got time to kill, give them a watch.
Los Angeles 1984 -- Ronald Regan opened the games and another pretty good cauldron lighting with the ignition of the Olympic Rings first.(And the fact that he made it to the top of those stairs without passing out!)
Barcellona 1992 -- Best ever in my opinion
Atlanta 1996 -- I remember the build-up and the secrecy as to who got to light the cauldron