Lately if you walk anywhere near a TV, you'll see lots of campaign ads. Everyone's vowing to make things better around here. A lot of what you're hearing this time around in 2008 might seem really novel. But this weekend on our series about 1968, we'll hear how much of what is old becomes new again. Here's a review of more than 80 political ads over the past 40 years. Judge for yourself what's changed and what hasn't.
