Silverlight tutorial sites in alphabetical order:

Author/SiteLink
Andy Beauliuehttp://www.andybeaulieu.com/Home/tabid/67/Default.aspx
Brad Adamshttp://blogs.msdn.com/brada/default.aspx
Chris Hayhttp://www.screencast.com/users/chrishayuk
DotNet Curryhttp://www.dotnetcurry.com/
Jesse Libertyhttp://silverlight.net/blogs/jesseliberty/
Joe Stegmanhttp://blogs.msdn.com/jstegman/default.aspx
Nikola Mihaylovhttp://blogs.msdn.com/nikola/default.aspx
Page Brookshttp://pagebrooks.com/
Pete Brownhttp://community.irritatedvowel.com/blogs/pete_browns_blog/default.aspx
Shawn Wildermuthhttp://wildermuth.com/
Silverlight Learning Resourceshttp://silverlight.net/learn/
SilverlightShowhttp://www.silverlightshow.net/
Terence Tsanghttp://www.shinedraw.com/
Tim Heuerhttp://timheuer.com/blog/
Timmy Kokkehttp://geekswithblogs.net/tkokke/Default.aspx

Also, here is a great Silverlight Blog summary page: http://www.netvibes.com/rboarman#Silverlight