Not anymore, but he's only just learning to walk and talk again :) www.oneloveforchi.com has up to date blogs from his mother and his friends on how he's doing :)
No, Chi-Chi did not get married to Vegeta, but rather to Goku at the end of Dragon Ball.
On the bottom of episodes of dragonballz he gets married in dragonball at the end of episode 153
Jackie was married to Enid Spann but they divorced in 1987 and Jackie has been single since
No. she is dating Jim Carrey though.