Warwick Davis, who is the star of the series, wrestles Gervais to the ground in the clip after being taunted continually about his lack of success as an actor.
Johnny Depp, Steve Carell and Sting have already been confirmed for cameo slots in the sitcom.
Life's Too Short will air on BBC Two later this year and at a later date on HBO in the US.
> Les Dennis, 'Enders Barry in Ricky Gervais's 'Life's Too Short' video
Watch the new clip of Ricky Gervais and Warwick Davis filming 'Life's Too Short' below: