Incidentally, Troy just turned 2 months old and had his 2-month checkup yesterday.  He's 23.5 inches long, weighs 13.8 lbs, and has the strength and alertness of a 4 month-old.  And in case you're wondering (and if you are, you're a nerd (like me)), his height and weight put him in the 75th and 90th percentiles, respectively, for other babies his age. 

Beefcake!