Congrats, my spawn is two and a half. ('No nap, Daddy. No nap!') You're in for one hell of a ride. Spend as much time as you can together. You won't believe how fast he changes.

Pick up a copy of Seymour Papert's Mindstorms (Lego named their bots after this book.)

Teach the skills needed to analyze problems and learn. To this end teach mathematics, programming and logic. Programs are proofs and proofs are programs. As a 7 year old, Logo programming was the sh!t. Applesoft basic was also fun because of the easy graphics. IMHO, to make perl interesting, you'll need to come up with an easy way to make pictures.

TGI says moo