Wow, there are so many amazing alien-sims in this thread, it was a pure joy to look at!
Here's the sim I made to explore Lunar Lakes, her name is Daria Tucklestone and she is an aspiring inventor. In my Lunar Lakes rumour has it that there might be life on other planets and Daria has set her own goal in life to find out if that is really the case.
http://desmond.imageshack.us/Himg338/scaled.php?server=338&filename=screenshot97a.jpg&res=medium
http://desmond.imageshack.us/Himg201/scaled.php?server=201&filename=screenshot98h.jpg&res=medium
