糖心风暴 is good TVB drama. And you can learn more popular Cantonese .If some word you're not understand. You can ask me. I am Cantonese.

hahaha infact i have already had some basic knowleadge about TVB and Cantonese ~ but i don't know how can i improve to a new level , i mean sometimes i can speak Cantonese but i am so shy for say it ~ how can i do ?

why not? If you have a basic knowledge already, that would certainly helps alot. TV news and radio are also good ideas. I listent to BBC radio everyday while I wanted to brush up on my English! One of my students is advanced level, and I once suggested her to watch 囧探查過界 as 囧 gwing2 is a "trendy word". Here you are the trailer of episode 1: http://www.youtube.com/watch?v=3e2JK_dUR5g&feature=related

thats not bad to you to learn the cantonese..the more you see it the more you can learn it..

i think u can watch some very classic TVB's show to learn cantonese,but the shows must easier understand which have seldom professional words.maybe movies and songs are more useful to learn it