Thanks for all your comments
Updating the graphics would be cool but not my area of expertise. If anyone would like to volunteer to design a new set of sprites that would be great.
Chuckie Egg would be a good project Matty...maybe do that after my next project which is a game of my own design.
I only started with Python when I saw Liam's first tutorial just before Xmas and I started work on the Jetpac Clone about 4 weeks ago - only working on it when the little'un had gone to sleep. I used the Pygame documentation along with looking at other peoples code and just went from there really.