Zevachim 105: Is Returning to an Original State Considered a New Beginning? - The fascinating discussion of Rav Reuven Margoliyos, Teshuvah.
Zevachim 108: The Requirement to Build a Mizbeach - The two stages in Bama, building a Mizbeach and offering the Korban.
Zevachim 109: Additions To a Mitzvah are Part of the Mitzvah - The concept that whatever is being added to the process of a Mitzvah is a Mitzvah as well.
Zevachim 99: Simcha is a Condition in Avodas Hashem - Onen, and the reason the Kohen Gadol can be Makriv as an Onen.
Zevachim 101: Darosh Dorash Moshe - The amazing Chasam Soffer regarding why Moshe thought the Se'ir of Rosh Chodesh should not be burned.
Zevachim 102: Why Doesn't the Gemara Say that Moshe was a Relative of Miriam? - The tremendous Chidush of the Ostrovtser based on the Maharal.
Zevachim 94: The Ruach Hakodesh of Rava, Chanukah - The reason Rava made some mistakes in Halachah, the Ruach Hakodesh that's revealed in Chanukah.
Zevachim 96: A Little of Light Repels a Lot of Darkness - The amazing Biur of the Chasam Sofer in our Sugiya.
Zevachim 91: Rosh Chodesh and Shabbos, and the Combination Revealed in Chanukah - Why is Rosh Chodesh considered more Mekudash than Shabbos, and the depth of Chanukah.
Zevachim 90: Olah Comes Before Chatas in the Keriah - The meaning of it, and the reason it should be different.
Zevachim 89: Kerias Hatorah on Rosh Chodesh of Chanukah, Tadir and "Ein Ma'avirin" - What Comes First? Answering a contradiction in the Shulchan Aruch.
Zevachim 87: No Lina on Top of the Mizbeach - The depth of the Psul of Lina, and the reason why it is different on top of the Mizbeach.
Zevachim 88-1: Bigdei Kehuna Bring Kaparah to Eight Aveiros - The Maharal's reasoning for these specific eight.
Zevachim 86: Connected to Kedushah - The Remez of the Tiferes Shelomo regarding one who connects to a Tzadik is elevated with him.