Camera, Fast Lenses and a slightly overcast day so there isnt any harsh sunlight.
ISO 200 most of the time @ f/2.8 or f/4 indoors, basically anything goes in terms of aperture out doors, although I like to use f/2.8 or f/4 outdoors too.
Indoors, shutter speed needs to be fast, 1/100th to get a sharp photo of anyone becuase people are not still life =/ Crank up the ISO, a grainy photo is better than a blurry one!
Basically just try to get different angles.
Canon EOS 5DmkII + BG-E6 + Canon EOS 40D + BG-E2N + Canon EOS 33
Canon 17-40 F/4L
USM + Canon 24-70 F/2.8L
USM + Canon 28mm F/1.8 USM + Canon 70-200 F/2.8L
USM IS + Canon 85mm F/1.8 USM
Canon Speedlite 580EX II + Canon Speedlite 540EZ + 2 x Nikon SB-80DX
Cactus V2s Wireless Trigger - 5 x
Cactus V2s Wireless Reciever