Must see in Raleigh? There's nothing really in Raleigh worth seeing. I've lived in the Raleigh/Durham area for 6 years now, and besides some mildly amusing museums, a couple of half-decent restaurants, an IMAX theater, a mega-mall, and a few lakes, theres nothing really memorable.
There is also a little software company called Red Hat, but even that isn't terribly intriguing for most tourists.