The look and feel of this theme is definitely owned by RuizDesign on deviantart. I started with his iphone icons which can be seen
here. However, as is often the case, not all of the icons I needed were in that set, so I created a bunch of my own and modeled them after his. (This proved to be rather difficult without a template) If you're as anal as I am, you might be able to tell some differences, but isn't it more fun to just blur your eyes a little and enjoy the show? Please let me know about any special requests, and I'll do my best to oblige.
The following icons are my own creations:
SMBprefs
YouTube
Contacts
Installer
Customize
Books
TTR
Solitaire
gpSPhone
Labyrinth
Sketch
Videos
iTunes

UPDATE 1/23/2008: I've just added 8 more icons:
Lights Off
iPhysics
iStudy
BeatPhone
iCountDown
MobileTetrominos
Pedometer
iBlackjack
Please, please post suggestions for more icons!
UPDATE 1/24/2008: Added 10 more icons:
PDF viewer
WiFiSwitch
TowersOfHanoi
BossTool
BallFight
SSH
psx4all
TuneWiki
Installer_2
Installer_3
(If you prefer one of the new installer icons, just take out the old one and change the name of the one of these to "Installer")
UPDATE 1/25/2008: Added 8 more icons:
SendFile
Garf
Categories
OpenTTD
EvolutionRGB
Caissa
PhotoBoard
WeDict
UPDATE 1/29/2008: Added 9 more icons:
VNotes
ToDoList
Homework
iZoo
Mines
iSnake
Phone
iSlots
Marble
UPDATE 1/30/2008: Added 10 more icons:
Music_2
Music_3
Music_4
Sudoku
musicquiz
NES
MIM
SysInfo (inspired by the one on skinny101's screenshot)
Finder
Converter
NOTE: Screenshot 3 is a fake - I didn't want to install all those apps on my ipod. All of those icons are included, but it's possible there might be a wrong name or two. Please let me know if anything isn't working and I'll fix it right away.