I've neglected my Ab's for awhile now and it's time for a change. Not only am I striving for that Sexy Beast look, but I also know that a stronger core will transfer towards improving my other powerlifts. I value your guy's opinion, so all suggestions are welcome. 
My staples are planks planks and more planks. I do bw only, then resisted and dynamic. Never felt better and stronger.
Squats and deads 
ISawSilva'sBONEr - Squats and deadsI too thought this was adequate enough, but from all that I have read, apparently it's not.
What have you read? I also do three sets of weighted crunches using a tricep extension rope plus hanging leg raises.
Squats and deads will definately develop your abs more than any isolation movement will.
ISawSilva'sBONEr - What have you read? I also do three sets of weighted crunches using a tricep extension rope plus hanging leg raises.I agree that deads and squats help tremendously with core strength, but I know that additional core work is needed, whether it be hyperextensions, weighted crunches, etc.
Squats and deads will definately develop your abs more than any isolation movement will.
Crunch throws with a med-ball, side throws with a med-ball, woodchops, landmines, mountain climbers and planks.
I wouldn't do Squats and Deads SOLEY for a six-pack.
I've been playing with kettlebells and trx for the last few months.
Try walking with kettlebell in one hand while maintaing straight spine. While on knees and straight arms holding TRX bands, do pullover movement. You can also put your feet in stirrups and do push ups. That'll be a strong plank position.
Squats, Deadlifts, torture twists, and lowering body fat by changing my diet
My go to AB routine is pick one movement for Flexion - Extension - Rotation <--- Hit them hard...DONE!
TAKU
Taku -What would be done for extension?
My go to AB routine is pick one movement for Flexion - Extension - Rotation <--- Hit them hard...DONE!
TAKU
Taku -
My go to AB routine is pick one movement for Flexion - Extension - Rotation <--- Hit them hard...DONE!
TAKU
TAKU,
When you say one movement for flexion, extension, and rotation, do you mean active movements in those planes or do you also include anti-movement (anti extension, flexion, rotation)?
trblesum13,
I have used a lot of what others have recommendation and like to rotation through my variations. My personal go-to exercises are usually farmer walk variations and pallof press variations.
Abs roller wheel works really well for me, some don't like it but it's brought my abs up really well
High reps and hold at the end of the movement like a plank
Extension would be Glute Ham raise, Resisted Back extentions, Other hip extension movements such as with a Stability ball or if I have access a dedicated machine such as the MedX lumbar extension.
Yes I do use static / iso movements such as resisted rotation movements etc.
TAKU
I often should I train them?
Thanks for the feedback guys.
trblesum13 - I often should I train them?How
Twice a week is adequate
Front squats
Abs Workout and Core Workout
https://www.youtube.com/watch?v=WejlJ2cK-R0
15-Minute Core Workout for Fighters - great routine with anti-flexion, anti-rotation, core strength, hip mobility and overall abs.
Perform each exercise for 30 seconds with no rest in between. Rest for one minute and repeat for 3 full rounds.
Exercise List
1. Abs Wheel Roll Outs/Walkouts
2. One Arm Push Up Holds R/One Arm Plank
3. Hip Raises
4. One Arm Push Up Holds L/One Arm Plank
5. Plank Body Raise
6. Gracie Kick Outs
7. Thai Crucifix - Side Plank R
8. Thai Crucifix - Side Plank L