Bright arum berries
Arum italicum is a plant with a lot going for it. In autumn the glossy, white-marbled foliage appears through the soil and lasts all winter into spring. The strange blooms are interesting rather than beautiful even though I do like them a lot. Then the foliage dies down in late spring to expose the spikes of shiny green berries that ripen to bright scarlet-orange in August. It grows in most soils and survives shade, growing where few other plants will grow. The berries are greedily eaten by birds and are very showy. In some places the seeds get thrown around a lot and seedlings can be a nuisance but in most cases the seedlings are welcome. I recently saw a couple of interesting combinations that are unusual and worth copying I thought.
The berries of Arum italicum set against the foliage of nandina
A striking contrast of dark phormium and arum berries
The Biking Gardener 
I too have this and I am very reluctant to let the berries stay as I have had it take over a small border. But I do agree it is a lovely sight and I always take pictures of it.
Yes, I have seen people having to wage war on it but so far I have not had to.
I grow this in my woodland border, and though it’s doing well, I find the flowers and berries tend to be short lived. I suspect they get knocked down by cats and then the slugs n snails have their evil way! But the leaves are gorgeous, and make it worth while.