It's an all out battle between Baby and Dad to win over Mom in Fight for Kisses.
Wilkinson Sword "Fight for kisses"
or youtube crud.
The end of the trailer points folks to www.ffk-wilkinson.com where you can watch the trailer again, download a game where baby battles dad, get screensavers and other stuff.
Credits include: JWT, AkamaStudio, 5emegauche, and Gimagin