The Hobbit's Mountain Trolls reference in Warlords of Draenor...

Troll Names in Hobbit: Tom, Bert & William

The chest that cab be found near the three in-game contains: Burglar's Vest...

and Dwarf Beard Rings (12 of them!) Well played Blizzard! Well Played!

*Note: Screenshots were taken by my fiancee. Thanks, babe!