Alot of us have been there. One day I flew a plane on a VERY short hop to another airport (uncontrolled) to get an inspection done (10 miles at the most). The weather was pretty crappy (read low IFR), and I just filed and made the trip without thinking much about it. Well, as soon as I landed, my friend was there picking me up so that we could go to class. He had some pretty cool news to tell me about the night before, or some silly crap like that, and we jumped in the car and headed to school. Drove 15 minutes, go to a parking spot, walked 15 minuets to class, and then I heard a plane that seemed to be flying in circles overhead (HOLDING PATTERN!!!!). And that's when it hit me.....I hadn't cancelled!!!!! Flight service had a time with me that morning.....