If you really need some up-close-and-personal shots using a cellphone camera, Brando of Hong Kong offers its 6x telephoto attachment that works with certain Nokia 6000- and 7000- series cellphones.
The lens is held in place by a replacement battery door, and then you focus the lens using the view screen of the cellphone. If you think your cellphone camera shots look crappy now, wait until you try holding this still. Good luck. It's $19.
Product page [Brando]