acafourekThis is great- I have a few clients (and projects of my own) where I've needed to pull the latest posts from Tumblr and in the past I've written my own code, but this is perfect for a redesign I'm doing now and will be my go-to for the future. Fast and easy, all you need to do is widgetize an are, do some CSS and you are all set!
http://wordpress.org/extend/plugins/tumblr-widget-for-wordpress/
gabrielroth