A recent advert by Guinness grabbed my attention, produced by Abbott Mead Vickers BBDO. The official name for it is 'noitulove', which is evolution spelt backwards. It draws from their long-spanning campaign using the slogan 'good things come to those who wait'. I particularly like this one as it pushes the boundary of how long the Earth has waited for Guinness to arrive and keeps in tone with their witty advertising tradition. The time travel effects are also extremely impressive.
They have also produced some recent print ads for Guinness, one of which reproduces the vintage Guinness advertising by John Gilroy and the other promotes Guinness from a can.