This is generally called a Christmas Cactus, but sometimes a Holiday Cactus. This one generally blooms around Halloween, and it did so in 2008. However, it also started blooming at the beginning of February, peaking around Valentine's Day. First time it's done that.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/62528187@N00">Dwight Sipler</a> from Stow, MA, USA
CC BY 2.0
<p><a rel="nofollow" class="external text" href="https://www.flickr.com/photos/62528187@N00/3289836989/">Valentine's Day Cactus</a>
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<ul><li>Uploaded by <a href="//commons.wikimedia.org/wiki/User:Uleli" title="User:Uleli">Uleli</a></li></ul>