11 lists are now online as well as lists for five countries.
Overall searches, it's Britney Spears. She has been at the top of the list for five of the past six years. See:
http://www.ysearchblog.com/archives/000386.html

What's Available:

Top Searches of 2006 Package
http://f2.buzz.re2.yahoo.com/topsearches2006/

Video Review
http://f2.buzz.re2.yahoo.com/topsearches2006/

Interactive Version
http://f2.buzz.re2.yahoo.com/topsearches2006/categories/

Lists and Rankings (various categories) for:
Canada
http://ca.promos.yahoo.com/yearinreview
France
http://fr.docs.yahoo.com/buzz2006.html
Germany
http://de.docs.yahoo.com/top2006/
Italy
http://it.promotions.yahoo.com/2006topsearches/index.html
Spain
http://es.docs.yahoo.com/buzz2006.html

More in this Yahoo Search Blog post:
http://www.ysearchblog.com/archives/000386.html