http://cameras.albury.net.au/orb/?site=Airport - Albury
http://www.melbournephotos.net.au/webcam/ - Melbourne itself (not airport)
http://insvr1.midcoastwater.com.au/WX/_sgt/m5_1.htm - Taree
http://www.australiasevereweather.com/video/webcam.htm - Lismore (not airport)
They're the ones we use... there is a dodgy Sydney one on top of the old tower (we think it blows around in the wind; it shows a different angle every day!), but it's on the BoM registered users site so can't be accessed by the general public.