Ex-voto paintings are a tradition in Mexico, an offering of gratitude to God and the saints for answered prayers, row after row of them lining the walls of Mexican churches, testifying to the congregations’ devotion, and to the enduring link between man and the spiritual. In artistic terms, however, these paintings, which have been created from the 16th century onwards, are one of the great national archives of folk art, extraordinary depictions of ordinary people: a moving, comic, tragic, epic narrative that is not to be missed.

A Better Life is Bicycle Thieves remodelled for modern LA. Vittorio De Sica’s iconic 1948 film about an Italian father and son living over a precipice of poverty sadly requires adjustment only in its details, the theft of a bicycle the father needs to seek work here updated to a stolen truck.

The downside of this job is that because new CDs are dropping through the letterbox every day, a lot of stuff inevitably gets consigned to the archives and forgotten about, when it really shouldn’t be. So when I heard that The Mexican Institute of Sound (aka Mexico City’s Camilo Lara) was rather belatedly playing live in London for the first time (his last album was released two years ago), it was an excuse to reacquaint myself with his recorded works to see if they were as good as they seemed at the time. The good news is that they are, but the less good news is that this concert didn’t really do them justice.

Gabriel Orozco has been something of an art-world secret, for some mysterious reason. He has been fêted at the Venice Biennale, he showed at the prestigious Documenta in Kassel, had a blazing Serpentine show, an Artangel commission and been flavour of the month for more than a decade to those who follow contemporary art. But to the general public? Nada, nothing, zip. And God knows why, for, as this fine Tate retrospective shows, Gabriel Orozco is the real McCoy; a dazzling creator, a serious thinker, a joyous, liberating mind and a pair of eyes that helps us see new. On top of that, as an artist he has charm to burn. For heaven’s sake, what’s not to like?

Gabriel Orozco has been something of an art-world secret, for some mysterious reason. He has been fêted at the Venice Biennale, he showed at the prestigious Documenta in Kassel, had a blazing Serpentine show, an Artangel commission and been flavour of the month for more than a decade to those who follow contemporary art. But to the general public? Nada, nothing, zip. And God knows why, for, as this fine Tate retrospective shows, Gabriel Orozco is the real McCoy; a dazzling creator, a serious thinker, a joyous, liberating mind and a pair of eyes that helps us see new. On top of that, as an artist he has charm to burn. For heaven’s sake, what’s not to like?

It is not uncommon for opportunistic film-makers to put together a flashy promo in the hope it will attract enough investors to turn it into a full-length feature. When Robert Rodriguez made the Machete trailer for 2007 double-bill Grindhouse, though – an all-action spoof featuring striking bit-part actor Danny Trejo as its titular knife-wielding protagonist – he had no intention of taking this parodic in-joke any further.

Watch the original Machete trailer:

In 1994, Francis Alÿs joined the regular hiring-line in the central square in Mexico City. Standing next to plumbers and carpenters with their hand-lettered signs touting their skills, his sign read "Turista", as he offered his ability to be an outsider looking in. Three years later, he returned to the square, the centre of city life, and the site of the annual Independence Day parade, and the "Grito de Dolores", the patriotic ringing of the bells at the National Palace which up to half a million people attend.

Since the passing of Luciano Pavarotti, there’s been a gigantic hole for a tenor of gold-plated opera chops and the gift of communication, and Rolando Villazón - young as he is, at only 38 - already appears to have sealed that gap up effortlessly. His stint as judge on the lamentable Popstar to Operastar on ITV recently left everyone tarnished but him. Villazón not only has a dazzling voice and uniquely electric hair, but sports about on the platform with a puppyish vivacity that brings dead places to life around him and endears him widely.