The Winter Triangle is one of the most useful asterisms in the Northern Hemisphere sky. It is formed by three stars, each famous on its own merits...
*Sirius, A-class, magnitude -1.5, distance 8.6 light-years
*Procyon, F-class, magnitude 0.3, distance 11.5 light-years
*Betelgeuse, M-class, magnitude 0.7, distance 570 light-years
I went outside to see it tonight, ~10:30pm. Procyon probably gets the least attention of the three, though it could be argued it has just as many interesting qualities as the other two.