Okay, so this has already been discussed, but that was a long time ago. Some of the character's weights have changed now that it is season 3. And yes, we have nothing better to do until the new episodes.
Aang:115
Sokka:130
Katara:120
Zuko:140
Iroh: Previously 260 now 250 all muscle. LOL
Ty Lee:115
Azula:118
Appa:10000
MOMO:9
Toph:85?
That's all I can think of now...