This week’s internet reviews

Andre Agassi's Grand Slam For Children ? Show — Killer app: Brandon Flowers and the rest of the Killers, one of many artists to be found on The Sixty One. Photograph: Ethan Miller/Getty Photograph: Ethan Miller/Getty Images

The Sixty One

The Sixty One is a music exploration site with an unusual but beautiful interface. Without much hand-holding, you're invited to enjoy new music – including some free downloads – while perusing full-page pictures, info boxes and slick graphics; some straightforward interactive touches also make an interesting departure from standard music blog layouts. Although it's mainly built around unknown US college acts, dig around to find tracks by the Killers and Portishead, as well as a band who hold the world record for the most crumpets eaten at a live concert.

Kid Casting

You know when a movie has a flashback scene and you get to see the character as a child? Well, that's what this website has dedicated itself to documenting, with hundreds of side-by-side screen grabs of the adult and flashback kid versions. Great fun – especially if the film stars Woody Allen, whose gawky alter egos are boss-eyed, where everyone else's are cuter mini lookalikes. Some kids reappear several times; a young man called Troy Gentile has a permanent gig as Jack Black's younger self. Others eclipsed the careers of the main actors (Dakota Fanning played a miniature Reese Witherspoon in her first movie). But for many, roles like 30 seconds as a 12-year-old Brad Pitt will remain career peaks.