Things to do in Portland Oregon?

My wife and I have been here since Sunday. She has been here before but she spent most of her time on the coast camping with her family. I can honestly say I am inlove with this city haha. But anyways we already went to the Coast. Saw Astoria, cape lookout, etc. We've been doing that for the last 3 days. Now we are returning our rental car and need stuff to do in City. We are kiddy corner from the movie theater and the Lloyd Center Mall or whatever it is.
My wife doesn't really want to go to the Japanese Gardens because of how expensive they are. I want to do the paranormal walk beneath the city or whatever it is and go to the Zoo. We don't drink so no bars please.

Go to Voodoo Donuts. :P

Check out this local cafe/restaurant: http://www.bigasssandwiches.com/

There's also a live variety radio show/podcast in Portland that you could attend: http://www.livewireradio.org/

The Portland Timbers play Saturday night, if you like soccer, you should get tickets :P