Every year for the Seafair air show, the Boeing Museum of Flight holds their Jet Blast Bash, inviting fans of aircraft of all types to watch the U.S. Navy's Blue Angels preflight demonstration and takeoff. Although you don't get a view of the actual air show demonstration that takes place in the box over Lake Washington, it's a great alternative to the endless crowds at Genessee Park if you care more about the airplanes than the hydroplanes.
After 7 years, it was finally time to replace my mid-2011 21.5" iMac with something larger and more powerful. The transition to using Adobe Lightroom to process my photos, and the slow performance even when exporting JPEGs from the original RAW files was the driving factor toward making the purchase. It's my declining eyesight that convinced me to go with a 27" iMac over another 21.5" model, not to mention the lack of user-accessible RAM in the current 21.5" iMac.