In MM, collecting all the stray fairies in a temple and then forgetting to visit the fairy fountain before playing the Song of Time. (I've had this fart more times than I care to admit.)
Favorite:
Midna - best companion
Ghirahim - best villain
Tetra - best Zelda
Groose - needs no explanation
Ravio - true identity surprised me
Least Favorite:
Tingle - owns slaves, takes all my rupees
Zant - hijacked by Ganon
Ingo - jerk, takes a lot of rupees from beginners
TP Zelda -...
1, 2. A Link to the Past / Majora's Mask (tie)
3. Ocarina of Time
4. Link's Awakening
5, 6. Wind Waker / A Link Between Worlds (can't decide which is more deserving of top 5 status)
7. Skyward Sword
8. Twilight Princess
9. Spirit Tracks
10. Oracle of Ages
11. Oracle of Seasons...