I moved to Oregon almost 6 years ago. Here are some of my favorites:
- Crater Lake. This time of year you should be able to get all the way around it without running into snow.
- Jet boats on the Rogue River. I think Hellgate is the company we've used before: http://www.hellgate.com/Splash/
- Mt. Hood/Timberline Lodge. See where some outside views for The Shining were shot. Plus, it's really pretty. Also around Mt. Hood, you can do some easy wheeling. Check out Barlow Road.
- Multnomah Falls. Big, tall waterfall out in the Columbia River gorge east of Portland. There's also a ton of hiking out there.
- Mt. St. Helens/Ape Caves. Bring your flashlights and/or lanterns and explore some cool lava caves. At the Ape Cave, you kind of enter in the middle of the cave--to the left is pretty easy, but to the right is more challenging and requires some climbing and steady footing. It's fun.
- Oregon coast - Cannon Beach, Seaside, Tillamook, and places south. Lots of touristy stuff, beautiful beaches, tide pools, and lighthouses if you're into that kind of thing.

After you get your AAA materials, if you have any specific questions about stuff you read about, let us know!