Do Landings in a Simulator Count Towards Landing Currency? (FAA in the USA)
Yes, as long as the simulator is properly certified (to level B,C,or D) you can do your takeoffs and landings to regain currency.

Long haul airline pilots frequently have trouble staying current for 3 takeoffs and landings in 90 days. This is because it takes 4 pilots to complete a long haul flight but only 1 will get the takeoff and landing. 

3 trips a month is about all you do, and if you are scheduled to be the augment pilot, you don't get a takeoff and landing.