Doctors, nurses, medical help in conjunction with S'char Shabbos.
Turning Off Alarm Clocks When They're On. Using Sprinkler Systems and Fax Machines;
ממצוא חפציך (Mimtzo Cheftzecha): Why Do We Need Both 'Recognizable' and כוונה (Kavana)?;
דבר דבר (Dabair Davar): הרהור Hirhurim (Thinking), Part 2;