This is a fun thread to read.

DD#1 took her first steps at 9 1/2 months and was running everywhere at 10 months. DH and I couldn't decide what her first word was, so I'm not sure when she started talking. She didn't say much until about 18 months, although she had no problem understanding and following multipart directions. When she hit 18 months, it was like a switch had been flipped. She started talking in full sentences and never.shut.up. Her favorite word at age 2 was "actually."

DD#2 took her first steps at 7 1/2 months and was running a few weeks later. She didn't speak nearly as much as her sister, in part because she couldn't get a word in edgewise. Plus, all she had to do was point at something and grunt or smile, and her sister would do whatever she wanted.