I was really bored today, so I opened Photoshop and made this PNG image:
http://www.atomicbinary.com/tuxico/tux.png
I thought it looked pretty good, so I decided to turn it into a ICO file. So here it is. The icon comes in 6 different sizes (255, 128, 64, 48, 32, 16). It's a pretty big file, but I figured someone could use it for something.
http://www.atomicbinary.com/tuxico/tux.ico
Feel free to use the PNG image as the Gnome applications menu icon. I sure will... as soon as I reinstall Fedora. Go ahead, tell me what you think. I can take it. *cringes*