#1: 1540: Flaming Chickens
This thing did awesome at their Pacific Northwest regionals and at Oklahoma. The team made without a doubt in my mind the best robot to come out of Oregon this year, and one that even stands up to some of the best from Washington.
#2: 2898/1510: Flying Hedgehogs/Wildcats
Both did well at Portland, and each individually rocked a different Seattle field. The design was consistent as well as versatile, and I also have to give big kudos to how well they stood out visually.
#3: 2733: Pigmice
Video included because they're the only design on my list that didn't go to World's this year, and I think more people outside of OR/WA should see this robot. It's a wonderful idea and I think they did a great job with it.