Traditionally I lose 20-22 lbs and hit a plateau for 6 weeks, it's killer! I've tried exercising more and different, eating more, eating less, drinking more water..so please don't suggest those. I'm open to any other suggestions.

maintain your diet and if youre working out 3-4 days a week, step it up to 4-5 days. Also, depending on which type of exercise youre doing, if you use the treadmill normally for 40 minutes, step it up to 50. Increase your weights and reps. Just don't give up, give it time. It will come off.
good luck!!
also.....try drinking a lot of green tea. It'll help get rid of unwanted toxins and boosts your metabolism.

Keep going...
Sometimes you may have to up your calorie intake a little to kick start your system. Well that's what they told me at Weight Watchers. Oh... and drink plenty.