It's all Watchmen's fault, of course.  Ever since Zack Snyder introduced this whole walk-on directors commentary malarky, there's been the danger of this happening.

And now, on Blu-ray, there's a way of making Terminator Salvation an even more irritating and worthless experience than it was at the cinema.

Now, I've no problem with director commentaries.  They're usually enjoyable, they add something extra to a film you've seen before (usually) and they're a natural extension of the making-of process.

I don't even mind branching extras.  They're optional.  You don't need to do anything if you don't want to, and if you do then it doesn't disrupt the flow of the film too much.

But this is something different, taking the tedious and unnecessary Christian Bale growlathon sequel and extending the misery.

For, as you'll see above, at seemingly random points of the movie the display goes from a nice HD print of the movie to something resembling a cheap iDVD menu, while some irritating ginger twat stands in front of the picture and talks over what's happening.

'In this scene here,' proclaims McG, 'you can see...'  Except we can't  We can't see feck all, because there some ginger gitwizard standing between the screen and us. Get out the way, Nichol, some of us are trying to watch the film.

Although to be fair, I'm not trying to watch it.  It's a bloody awful film.  The man who managed to cock up Charlie's Angels, lets not forget, and who was going to rape the arse off Spaced, has now skewered the once-iconic Terminator franchise.  A series which survived the indignities of the Terminatrix and the whacky adventures of the Sarah Connor Chronicles gets turned into a Transformers-meets-Mad-Max mashup.

Sam Worthington tries his best, bless, with an overbooked character, while Anton Yelchin - tagged as comic relief v1.2 in Star Trek - turns in a likeable performance as baby Kyle Reese.  But up against Christian Bale's growly Batman With A Gun, it's not enough.