OoT and MM are my favourites, my least favourite is Triforce Heroes.
Favourites:
Ocarina Of Time
Majora's Mask
A Link To The Past
Link's Awakening DX
A Link Between Worlds
Skyward Sword
Oracle Of Ages/Seasons
Least favourites:
The CD-I games (Wand Of Gamelon, Zelda's Adventure, The Faces Of...