One of my favorites is Lake Surprise, its a really cool one for a nice day hike and fishing if you want:
[IMG]wta.org/site_images/hikes/surprise-lake.jpg/image_large[/IMG]
http://www.wta.org/go-hiking/hikes/surprise-lake-1
Also, check out Cow Creek Meadows, it's the meadow in this picture:
(sorry couldn't embed) http://www.flickr.com/photos/shahiddurrani/2685983669/sizes/l/in/photostream/
http://www.wta.org/go-hiking/hikes/cow-creek-meadows
I think that it's like a 12 mile hike in, but theres another lake about halfway that you can overnight camp at if you want. Honestly, the creek that winds through the meadow is the most beautiful thing I've ever seen haha, it's all glacier run off, and like 15ft deep but it looks like 1ft deep because it's just so clear. Its really an awesome place to be. Although I think it would be a bit too buggy for overnight camping up there.
I really want to check out the one you just posted, it looks awesome! This thread was an awesome idea btw