http://www.daftalive.com/
"...Daft Punk are noted for their use of visual components associated with their musical productions. The music videos for their singles from Homework featured memorable characters and placed emphasis on storytelling instead of musical performance. The album Discovery subsequently became the soundtrack to Interstella 5555.
Their outward personae have also changed over time. During their Homework years, the duo would usually wear masks to hide their appearance. When not wearing disguises, they occasionally preferred to be replaced by animation (as they appeared in The Work of Director Michel Gondry DVD) or have their faces digitally obscured for press kits. Very few photos of the duo's faces exist, including a blurry one found in the Homework liner notes.."