The last Zelda game I played seriously was Majora's Mask last week. I never finished MM because my collectors edition broke, and I finally got a new one.
(I'm already in Ikana) Now you mention it; I'm also a bit bored by OOT, I love the game but I just played through it too much. I borrowed OOT3D from a friend eight months ago and I just can't get myself to play the Master Quest any further. (Hah, and I'm sure that he wants it back)
But I'm not playing that often anyway, the last Zelda game that I seriously finished was Minish Cap last summer.
I promised myself to only play in vacations, because other things (like school) consume a lot of time, but I just fool around a bit half of the time when I do play.
So that doesn't count