I'm planning a holiday trip.
For airfare I've been using Expedia, Yapta and Farecast.
Yapta and Farecast are cool because they look at price trends over time to best determine when to buy. I know about Orbitz, Travelocity but figure they're the similar to Expedia. Travelzoo seems to be best for short-term deals.
For hotel, I'm planning on bidding on Priceline.
Any other suggestions for online travel resources?