As RGS said, USPSA matches are a lot of fun. If you've done some type of action shooting before and want to get into USPSA, here's a great opportunity to learn from one of the area's top USPSA shooters:
http://northeastshooters.com/vbulletin/showthread.php?t=32172
You'll learn the key points to shooting USPSA (compared to, say IDPA).
http://northeastshooters.com/vbulletin/showthread.php?t=32172
You'll learn the key points to shooting USPSA (compared to, say IDPA).