So far this year:
Hilton Arlington (VA)--upgraded to exec floor, got voucher for full breakfast even though I chose the points.
HGI NY/Chelsea (28th St)--no upgrade of note
Hilton Tokyo--Given choice between smoking room on exec floor or nonsmoking on regular floor.
Conrad Tokyo--Upgraded to Bay View room
Hilton Kuala Lumpur--Upgraded to exec floor
Palmer House (Chicago)--no upgrade, was in a hurry at check-in so I didn't ask. Got lounge access as I understand is standard for golds here.