Seems to me that a lot of the people that frequent this community have really good photoshop skills. I thought you might get a kick out of this that i saw on another community.
Photoshop Wars!
Premise is simple. below is a regular picture. What you want to do is this:
1. Add something to the picture below using a program such as photoshop or paintshop pro. Carry on adding from the latest picture.
2. Make it blend in and seem as if it was there in the first place. No cutting and pasting in paint, please.
3. Don't make your additions too big, i don't want humongous images taking up the entire picture and leaving no room for anyone else.
4. Take more than 30 seconds on it, we can tell if you rushed you know. We all know we spend too much time on these forums, now its time to waste it on something else.
5. Compress images properly. There is nothing worse than pixellating a good add.
6. Do not resize the image.
Have fun!