1. CreativePro.com has a 17 minute video "Intelligent Importing" which focuses on getting the absolute most when importing your images into Lightroom.
2. Speaking of videos, Adobe Evangelists (great name, don't you think?) has put together a series of Lightroom tutorial flash movies.
3. You can also get a bunch of tutorials at The Image-Space.
4. Take a listen to how Julieanne Kost uses Lightroom (one of the Adobe Evangelists), and learn about her workflow, you'll be glad you did.
5. LightroomGalleries.com has (free) Flash and HTML based galleries and slideshow templates specifically for Lightroom and they just (today) came out with LRG FlashSlideStrip 2.0, their latest slideshow template for Lightroom.
Thanks to all who wrote in!