A lot of these tricks were present in GTA3. In fact, I spent many an hour tricking cops and civilians into walking off of bridges and such or creating huge conga lines of chasing cops.
Fun times. Videos that add needless "funny" commentary into already humorous stuff are kind of blah.
That's kinda the point of these games, isn't it? In any case, it's always been more fun than what the designers seem to what you to do (the missions and such).