In Extras (2007), David Bowie’s cameo went beyond the script. The improvised song “Little Fat Man ” was less about Andy Millman and more a pointed roast of Ricky Gervais himself, who was at the height of his post-Office fame. Bowie agreed to appear precisely to flip the usual celebrity cameo dynamic, using his cultural authority to puncture Gervais’s ego, with Gervais fully in on — and approving — the joke. @rickygervais @davidbowie . #davidbowie | Sticks For Stones