I've used Mouser a few times recently. I've overlooked them before because they're in the States, but they're often cheaper than Farnell, and though the mimumum order for free delivery is large, they deal with customs fees and the order arrives in Europe quickly.
Worth a look in if you need to buy a lot of stuff, definitely.
I just wish they weren't quite so wasteful with their packaging. Putting a single resistor in a big, thick zip lock bag really isn't the way things should be done these days.