I've updated this section: http://sheets-collection.blogspot.com/2009/06/international-piano-sheets-g.html with Air Supply, Barbra Streisand, Bee Gees and Goo Goo Dolls (Slide).
Anyone wants me to add other new artists? This offer applies to any sections available on this site. You can leave me a comment on this entry, on the Tagboards, on Twitter or even email me your suggestion.
For now, I have to do up the International (P - Z) Collection because all/most of the files are being hosted by 4shared but have been removed.
So, I'll wait to hear your suggestions.