A few combos...
Shermie:
cross-up jumping C, standing A, standing A, hcb*2+A/C / 1 stock, 50% damage
Benimaru:
in MAX mode... cross-up jumping D, crouching A, D, qcf*2+A/C / 2 stocks, 60-65% damage
Yashiro:
in MAX mode... cross-up jumping C, crouching A, A, far C, f+A, qcf*2+A/C / 2 stocks, 70% damage, very tricky to pull off
Ryo:
in MAX mode... cross-up jumping D, crouching B, crouching A, crouching C, qcf*2+A/C -opponent is dizzy- cross-up jumping D, crouching B, crouching C, qcf,hcb+A/C / 3 stocks, 90% damage
Kyo:
hyper hop B, crouching B, crouching A, qcf*2+A/C / 1 stock, 40-45% damage
Ralf:
in MAX mode... charge back, f+D, quickly do a C and cancel it into qcb,hcf+K / 2 stocks, 90% damage (takes some practice)
SonGohan, the combo you're looking for is:
Kim:
cross-up jumping D, C, d,d+B, C, d,d+B, C, d,d+B, qcb,f+B/D (that's right... it's possible to do 3 d,d+B's, not just one)
All of the aforementioned combos are for advanced mode, btw.