Go to one of the town halls listed here and, when you're there, remember the advice listed here. If you know the local organizers of your specific town hall, make especially sure they have a copy of that second link. Item #10 is particularly important.
Don't let anti-Americans (and yes, those against health care reform, wishing harm upon the people of this country, are indeed anti-Americans. The rhetoric may be overwrought and familiar from the other side, but I nevertheless mean every word) like these douchebags win:
[youtube http://www.youtube.com/v/V-Rd2d-7eEw&hl=en&fs=1& expand=1]
Sadly, I haven't found a town hall yet within 100 miles of me, but I'll be watching that calendar.