seen these yet? http://olloclip.com/

Pretty cool.

Here's a trick for sweet macro pics....don't tell the folks at olloclip!!! get a jeweler's loupe preferably 10x 21mm...thats all u need....check it....iphone and jewelers loupe

That is very cool! Yet kinda expensive!!

For macro shots, you can get free lenses from any type of old electronic device that reads a disk (computer, gaming system old dvr, ect).

Here is a fishing fly shot from my Iphone 4...