Blooming Beauty

I stopped by the greenhouse today to check out beginning of the season plants, and these brilliant red flowers were blooming on a giant Orchid Cactus. Each flower was about 7-8 inches in diameter.
The best part was I actually have one of these "cactus," but I didn't know that it grows really well in a hanging pot, nor did I know the name of it. I have been keeping it in a small pot for more than 10 years, but I'll be replanting it today!