I was just asked, by a Creative Director, to provide them with a list of clients and agencies I've shot both stills and moving image for. I'm a bit frazzled and not really thinking but this was some I spouted off of the top of my head -

AMV - Halfords/Creative Circle
BBH - Surf
TBWA - PriceWaterHouseCooper
DDB Paris - Rubson
Mother - FRANK
JWT - Shell
Leo Burnett NY - World Trade Centre
Euro RSCG - LG
McCann Erikson - Mastercard
MCBD - BT Syntegra/Blacks
WCRS - Centre Point/Scoot
DDB London - The Guardian/British Gas
Leo Burnett - Age Concern/Avis
Publicis - Hewlett Packard
Interbrand - Orange
Saatchi & Saatchi - RBS/Persil/Telewest/Visa Business/T-Mobile
Lowe London - Reebok
Nike Direct - Nike
Craik Jones - Orange
HHCL - Ambrosia
CHI - Typhoo
BBDO Warsaw - Autan
Leo Burnett Warsaw - Ikea

Also Panasonic/Wanadoo/Brother/Sony/NHS...

Not a bad list I think. Still, not going to rest on my laurels. Many more to add to this.