Soooo fucking jealous.
I have a cactus that looks almost identical to the one on the left... but I doubt it'll flower anytime soon, if ever, because of the surgery I had to do to it.
I got it for free off the place my mum worked at, and they hadn't took care of it at all. They'd over-watered the hell out of it, and as a result it had grown all stringy and mis-shapen.
I managed to get it growing normally again, but then the bad growth in-between the good growth and the roots started to collapse, meaning I had no choice but to cut the top off and re-root it as a new plant.
It's currently dormant, and minus any roots. I hope it'll survive and grow into a new complete cactus this year. It's a gamble, of unknown odds, that it'll live, but I had no choice since it was definitely going to die if left as it was. :(