If you have been wanting to import your entries from Movable Type into WordPress so that you can switch, but have been worried about losing your hits from Google and or other linkage, look no further! The venerable Alex King has written and posted a script/tutorial which does just what you are looking for!
You can find the script here.
He encourages people to use the script to build templates and other material as they please. So if you or a friend have been wanting to switch, but have used this excuse, get crackin!
Find a way to thank Alex if you do use his script.