Whether with the economy, it's a "good" time for a trip to Europe, I can't say, but it's suddenly gotten cheaper by about 20% than it has been in a while: 
And the Dollar keeps climbing
November 25, 2008
Here’s a rumour I’m looking forward to following – the fall of the EURO?
August 15, 2008
I haven't been following the EURO too closely, just keeping my head in the sand because it's out of control and we just know that on our upcoming trip we'll be almost doubling shop window prices to get the dollar equivalent. ... For a long time, every economist and banker we know has said that the EU can't tolerate an over-valued EURO for too long. Yet, it has continued to rise, topping out at the beginning of August at $1.59, before a precipitous $.08 drop in the last two weeks (as shown in this chart at Yahoo Finance ).
