Hi Shawn,

Both my parents are from Zaragoza and I lived there for 11 years. It's too bad I can't go there this weekend to show you around, I have an appointment with Chica
Anyway, try not to miss, La Basílica del PILAR, La Seo(and its 'Museo de Tapices'), La Aljafería, El Tubo(old extra-narrow streets full of bars), the Museo Provincial(if you love Goya's paintings), 'el casco viejo' for lively night-life, etc....
If you go there by yourself, I have a lot of cousins, one of them(a crazy 27-old-redhead) owns a bar, I can give you the address if you want, she'd give you great advice.

Have fun!