I was outside having a cigarette at a little after 10pm Tues.(4/20/09). I was looking at all the stars and notice a light west of me that was pulsating different colors red,blue,green,yellow, and white. A couple of friends were also over so I told them to check it out. My friend and I look at this light for about 20 minutes waiting to see if it was a plane or a chopper. It definately caught our attention. It stayed stationary making small jogs left to right and then it moved in a circular motion counter clockwise, thats when I knew something weird was happening. It also look like it had a spotlight but it only went down a little bit in comparison to the size of the object. It could have just been the brightness of the object, but I really don't think so it was defined. That's about it we went inside I kept looking outside to see if it was there and it was. I believe it was 11:30pm when I last look out to see if I could see it and it was gone.