Mt Baker Ski Area
This place gets tons of snow and has tons of terrain. There's some beginners terrain around, but that's definitely not the focus here. Lots of steep and deep and stuff that will make you crap your pants. The Canyon is one of the best runs, but if god help you if there's an avalance in there :) This is easily the best mountain in Washington State.
The Summit at Snoqualmie
Snoqualmie isn't the best resort in the world, or even in Washington. However, it's got some decent terrain and they really gear for Snowboarders with half pipes and lots of rails/hits. If you're just learning, there's plenty of terrain that is easy to learn on. Plus, it's located really close to Seattle and you can get decent deals using Shell gas passes.
University Book Store
Anything you want is here and they have really good hours. For instance, I needed some photography supplies at 8pm on a Sunday. You can't get that anywhere, but here. Electronics, books, clothes, art supplies, all kinds of cool stuff. It's conveniently located right on University AVE. It also has some pretty competitive prices.
Bulldog News
If you're in need of some reading material, here's a great place to stop off. Friendly staff and lots of cool magazines. They stock all the mainstream stuff as well as lots of cool independant and underground stuff. They're located right on the University Ave, so it's convenient and near lots of other cool stuff. They have seats and a cafe for you to hand out with your new stuff.
PRO Sports Club Seattle
Lots of equipment, basketball courts, racquetball courts, a couple of pools, sauna, whirlpool, steam room. The bathrooms are stocked with shaving cream, body/face lotion and mouthwash. Everything is very classy looking. The food at the restaurant and the cafe is pretty reasonable and tasty. I'm not sure how much it costs, because I had a free membership, but it's probably worth it.
Easy Street Records - Queen Anne
How cool is seeing a band at a record store? Pretty cool if you ask me. These guys cater to the local scene and have a really good selection. They also have extremely knowledgable staff. Local CD stores are the way to go, the big chains cater to folks looking to buy the latest disposable album, these places help you find GOOD music.
PT Web Media
My band did some duplication here and the service was awesome. They litterally came to me to get the materials and then to deliver the results. They matched the best price I found online and it was way more convenient and personal to deal with someone local. Next time I duplicate, I'll definitely be going back here.
Northwest Guitars
They have a very friendly and helpful staff and are more than willing to match prices with our places around town. They have an interesting selection of equipment too. The coolest thing I ran into was a selection of carbon fiber accustic guitars made in Woodinville, WA. Drop in some time and check out what they have going on.
Evolution Rehearsal Studios
There aren't many options on the East Side for room rental. Evolution Studios is a good resource though. They don't really cater to long term rental, but you can come in and pay by the hour. Their prices are very reasonable and the equipment they provide is good. If you're just getting started on a new project, this is a cool place to get started up until you find a monthly rental.
UW Waterfront Activities Center
And this is a good place to do it. Cheap rentals, especially for students. Cost is about $7/hr for a canoe or row boat. The area is pretty cool, right near the arboreatum. Canoeing out on the lake is a little big tough, the currents are kind of stong and there's lots of big boats. Neverless, it's a cool way to spend a nice afternoon.