ROALD Dahl's unique world makes its latest big screen return courtesy of Steven Spielberg this week, whilst the Star Trek team comes back to boldly go one more time.

Meanwhile, Paul Feig's take on the Ghostbusters, dogged by controversy, remains in cinemas.

Here are the best and worst films of the week.

New releases

The BFG (Cert:PG, 117 mins)

Sweetness and childish wonder glister in every frame, including a towering motion capture performance from Mark Rylance as the eponymous hulk, who blows bottled dreams into bedrooms using his phizz-whizzing metal trumpet.

On-screen rapport between the Oscar-winning actor and young co-star Ruby Barnhill galvanizes the picture, building to a rousing crescendo at Buckingham Palace, where a swig of frobscottle, the BFG's effervescent green brew, induces rip-roaring bouts of whizzpopping that prove you can't beat a well-delivered fart gag.

Rylance's digitally conjured character has a twinkle of believability in his eyes, and Cheshire-born Barnhill is a suitably spunky and spirited heroine in the midst of the eye-popping mayhem.

Some of the darker elements of Dahl's source text have been excised entirely - the noise of crunching bones doesn't crackety-clack for miles around - so young audiences won't endure sleepless nights after the end credits roll.

Star Trek Beyond (Cert:12A, 122 mins)

Dedicated to Anton Yelchin, who died in a freak accident in June, and Leonard Nimoy, the third instalment of the rebooted Star Trek is a familiar conflation of past and future present that fails to set its phasers to stun.

JJ Abrams vacated the director's chair to make Star Wars: The Force Awakens, so Justin Lin, who helmed four turbo-charged entries of The Fast And The Furious franchise, steps into the fray.

He orchestrates action set pieces with confidence although some of the interstellar skirmishes are reduced to a dizzying blur by gyroscopic camerawork and overly enthusiastic editing.

Chris Pine, Zachary Quinto and co are solid in roles that lack dramatic meat and don't progress the characters over two hours, and a flimsy, contrived plot resolves potential conflict with minimum blood, sweat and tears.

Still in cinemas

Ghostbusters (Cert:12A, 116 mins)

This movie ain't afraid of no ghost... and it ain't bothered by no sexist either.

Paul Feig, director of female-led comedies Bridesmaids and The Heat, brings a real verve and visual style to his take on the proton packs and banter made famous by Bill Murray and friends in 1984.

His central foursome - Kristen Wiig, Melissa McCarthy, Leslie Jones and Kate McKinnon - boast impressive chemistry and McKinnon, especially, is a comedic live wire with offbeat delivery and a slightly unhinged sense of improvisational wit.

Pre-release controversy saw the internet's cabal of misogynists slam the film's focus on femininity and those vociferous critics will not be pleased by the sad loner who proves to be the central villain, or the airheaded eye candy personified by Chris Hemsworth's scene-stealing receptionist.

The most important thing, though, is that the film is simply very funny. It has a noticeable middle act sag and there isn't quite enough meaningful emotional interplay between the leads, but the laughs come thick and fast throughout.

In a summer packed with mediocre blockbusters, Feig's take on the Ghostbusters is an energetic, vibrant delight.