We just booked a trip via travelzoo and while I'm sure a lot of you have heard of it, I just wanted to share that it's a great place to look for a good deal.
Our friends HMed in Greece last year on a Travelzoo package; we just booked 7 nights in Ireland this fall for our anniversary, with direct flight, car rental (upgraded), and hotel for $1,150 per person. We knew the names of all of the hotels in advance to search them on tripadvisor, etc. (That price is cheaper than the current flight price outright from the airline).
http://www.travelzoo.com/vacations/europe/-899-Ireland-in-Autumn-Weeklong-4-City-Vacation-w-Air-1263578/?conf=1&cm=signedin&source=_tzlock&placement=Overlay-TravelDeal-DealPage