I have to say i really like Apple's new ad campaign. The biggest reason is that I am one of those people who switched recently. Back in college everything was unix and mac. Then, when I started working there were a lot more PCs out there. And even now a lot of my day to day work is on PCs.
When I got a bonus last year I was looking at laptops and some friends had recommended looking at Apple. I laughed at first, but decided to take a look because I'd heard OS X was based on unix. After trying it out I loved it and got a TiBook. While I still have a PC at home, I rarely use it.
So while I think there's definitely a ton of marketing gibberish on Apple's site, I so totally agree with the overall message. I definitely think it's worth it to take a look at Apple if you are thinking of buying a new computer.