The long-tail cast on method is probably the most popular among experienced knitters. It does take a bit of practice to get this method down, but once you understand what you're doing it's quick and easy to get stitches on the needle.
The long-tail cast on also counts as row of knitting, which is nice. It is not as stretchy as some methods, but it's not too firm, either. It is a good all-purpose, middle-of-the-road cast on method.Also known as:
double cast on, continental cast on, sling shot, two-strand, Y cast on