Rabbi Eli Feder

 Somebody Who Thinks It is Permitted to Murder

Sources: Makkos 7b and Tosafos "elah..."

Brisker Methodology 16 min 30 sec
Why We Need Three Cases of Derech Nefilla

Sources: Makkos 7a, Tosafos "haya yored..."

Brisker Methodology 28 min 5 sec
Basics of Galus and Derech Nefilla: the Rambam's Explanation

Sources: Makkos 7a-7b, Mishna and first two lines of the gemara Rambam Rotzei'ach U'shmiras Ha'nefesh perek 6 (specifically halacha 12)

Brisker Methodology 46 min 54 sec