I've finally posted the first batch of votes over on the 2009 predictions page, and it's a big one -- 85!
Almost exactly half of the people so far have picked a date between April 23rd and April 27th, within two days of last year's ice out date. And yet, amazingly, no one has picked April 26th :-)
Edit: Spoke too soon! My father has jumped on April 26th :-)