A student asks:
I'm off to buy a new set of headphones. Any suggestions on make or model?
Sony MDR-V600 (better and cheaper) or Sony MDR-7506. They are so much the industry standard that people using other headphones are sometimes looked at as unprofessional (although there are a few other models that are pretty good too). They can be used for any purpose from production mixing through dialogue editing and provide excellent insulation from exerior noise.
PLEASE do not use ear buds or other cheap headphones designed for use with MP3 players. They are deliberately cheap and do not insulate well.