The Block: Five reasons to watch tonight

Block villains Brooke and Mitch.

After 10 weeks, many litres of paint, and many buckets of tears, the four teams in The Block NZ: Villa Wars will find out whether it was all worth it.

Ratings for the fourth series haven't matched the previous incarnations. So if you've missed it so far, here's five reasons to tune in for Sunday's auction ...

1. To see Mitch and Brooke's faces

There's always one couple - this time around Brooke and Mitch undoubtedly earned the title of Block NZ villains. The couple from Christchurch took a harsh line, like many other unlikeables before them, scoring their block buddies big fat zeroes in Dinner Wars with no better explanation than: "We're here to win". Brooke's childish behaviour and outburst over alleged favouritism did little to win over fans. To make matters worse, the pair often sport matching scowls. Let's see if they can turn those frowns upside down come sale night.

2. Out of interest - do kitchens really sell houses?

It's safe to say Auckland couple Jamie and Hayden had an epic fail with the judges by pairing a colourful graffiti splashback with black walls and fittings in their kitchen, but does that mean the house is any less appealing? The saying "kitchens sell houses" was bandied about The Block this past week but do they? Maybe big slabs of street-art shouting "Be Bold" from behind the saucepans might the bling point of difference for potential buyers.

3. The feelgood factor

There's always a sense of excitement when Block auction night rolls around. Those who have invested three nights a week in the show do tend to form some kind of connection with one team or another. By the time it comes down to the wire, you're right alongside them, sitting on the edge of the sofa, hands in mouth - crossing fingers for people you've never actually met and shouting at the TV screen. Inevitably there are tears, of joy or bitter disappointment. We're expecting floods if the emotional Sarah and Minanne have anything to do with it. Someone has to lose, someone has to win - but most of the time the contestants walk away better off than where they began. And that's where the feelgood factor comes in.

4. For the drama

Oh yes, there is always something brewing below the surface - some simmering unfinished business, perhaps an unresolved dispute. Will it all boil over in this pressure cooker episode? That is one very good reason you want to be tuned in - God forbid you miss the biggest talked-about TV moment since Poppy farted her way to stardom on The Bachelor NZ.

5. To discover the fate of underdogs Sarah and Minanne

Let's be honest, there was plenty of doubt when the petite sister duo first appeared on screen - could they even hold a hammer, let alone demolish a wall? Despite a dismal start with a less-than-inviting guest room, the pint-sized siblings have delivered some not entirely awful work, though the judges often marked them harshly. Sarah and Minanne finally did something right in their critics' eyes, finishing on a high with a win for their simplistic hallway and light and breezy kitchen design, but what will the mixed bag of good and bad rooms bring at auction?