Over from CX:
JHUN :
His

B/D roll now adds a whole new depth to his game, especially against fireballers.
You can basically cancel his roll into any special or command move at any point during the roll after its initial startup.
Since it has startup invulnerability, you can use it to 'roll' between attack strings then cancel it into a grab, or dfC if the opponent tries to jump.
Can also be used as a semi safe option to close the distance against characters like Billy or any long range poker, you can get hit as you come out from the 'roll' but you can also try and read their moves and cancel the roll and nail them with a

C.
I was using him a lot today and I managed to qcbB into grab between Iori's dwnB,dwnA, farC attack string (qcbB'd after the dwnA then dpB his standC). Also managed to qcbB --> grab in between Takuma's dwnB,dwnA ---> hcbD blockstring. QcbD gives you a longer window to cancel into stuff, but you also travel further (and hence its slower), I prefer using the B version.
Pretty broken move imo, its pretty much invulnerable against any non-grab move. A couple of the guys started getting freaked out by my normal rolls, they kept jumping backwards when I did a normal AB at them

....
EDIT: Tried the roll cancel techniques and it's real good. From a 1.5 char's distance I do

+D and I watch what they do: If they don't move I cancel into

+K (maybe I should try

~f+P instead), if they jump

+A anti-air. You really have plenty of options.
Kinda reminds me of the strategy for dodge Shermie in '98UM or 2k2UM Shermie with her ABC dodge: When your opponent is waking up and you're half a character away, dodge and watch what they do-->

+K,

+P,

+K,

+P etc... only except Goro moves him forward which is even more disadvantageous for the opponent.
From CX:
Dark_Chaotix :
cD,

+B into HSDM is guaranteed. Even on roll recovery
Great find, I tried it and it works nicely, although I prefer: d.D,

+B, HSDM for hit confirmation. Just the about the only qmax combo into the HSDM I can find is: s.C, BC, d.D,

+B, HSDM.
Tried some more Maxmode

+A madness and found:
(2 stock) Max: (dp+A,

+B)x2,

+A, qc
f+B, HSDM for 4 hits --70% Not bad for a full screen low hit (I also made sure the computer couldn't recovery roll).
For some reason his s.C, BC, s.C into SDM (hcbx2+AC) is pretty easy, I was surprised.
I never knew his far B cancels, it's ridiculous how you can do far B into

~f+P.