Ye gods, I hate the Halifax ads with a passion, especially the I'm Into Something Good one.
I can't honestly say there are any ads around at the moment that spring to mind as particularly good, but the question gives me another excuse to link to my favourite ad of all time. I don't know which country it comes from - I don't remember ever seeing it on British telly, but the boy in it seems to be English. Funny, clever and touching - why aren't more ads like this?
http://uk.youtube.com/watch?v=aKWlhp-XT5Q