My first contribution is my sig. I wanted it to look sort of like a GT4 image. I like the darkness like its a night course. :)

Original: (has some PS work .. its not straight from the camera)
http://i.pbase.com/g4/57/569157/2/60404419.lakefront_lights_1.jpg

after toying with it:
http://i.pbase.com/o4/57/569157/1/60704353.gtfour.jpg

nice, I like it. you could improve the dither around the logo a bit though.

Yeah it was great at the resolution I edited it all in, which was upwards of 2000x1200, then I downsized it and it didnt work so well.

Ill fix it soon....I forgot to save the PSD though. :(