Great reply, dogcanyon!

Seriously, I hope Priceline's hotel program is around for a long time. Just stayed (twice) at the Doubletree at SEA airport for $13 per night. Total charges, including all taxes and fees, was $21.55 per night. Got upgraded room both times based on Hilton HHonors gold status, along with 2 free breakfasts. Terrific value. Even got HHonors points as a fluke/mistake!

Also stayed at a Homestead Village Suites in SJC for $15, and enjoyed it.