Weaving a web
One film promo that stood out instantly had a little girl and a stocky (Jupiter Jones would have approved of the epithet)
boy singing a quirky song. My first guess turned out to be right: it was a jhalak of Vishal Bharadwaj's Makdee. The song was typically Vishal, who's actually directing the movie too(First time I've known a music director to take on the role of the director too) and making his debut. Supposed to be a children's movie also featuring Shabana Azmi as a witch. Many good films are unnecessarily tagged "for kids" and don't get the deserved kudos. Case in point being Halo by Santosh Sivan. Makdee seemed quite interesting.