R Berel Wein explains why a person’s word should be his bond: link
R Yissocher Frand, based on the commentary of the Ramban, explains why Parshas Nedarim was given to the Roshei HaMatos: link
R Michael Rosensweig examines the significance of Nedarim , the role of Nedarim in the perfection of Torah, and the role of the Talmid Chacham in Nedarim: link 1, link 2, link 3
R Mayer Twersky analyzes the positive nature of abstinence: link
The Nesivos Shalom, as elucidated by R Yitzchak Adlerstein, shows how Kedushah is effectuated through our words: link
R Ezra Bick explores the nature of the war with Midyan: link
R Shlomoh Riskin investigates the role of half of the tribe of Menaashe: link
R Asher Brander discusses the Halacha that a husband may nullify the vows taken by his wife that are considered Inui Nefesh: link
R Avigdor Nevenzal analyzes the dange of acting in haste: link
R Hershel Schachter and R Sir Jonathan Sacks examines the misplaced priorities of the Bnei Gad and Bnei Reuven., and how to properly allocate our Tzedaka and Chesed resources: link 1, link 2, link 3 (audio)
R Asher Weiss, R Dovid Gottlieb, and R Aryeh Lebowitz explore the Halachic dimensions of Tevilas Kelim: link 1 (audio), link 2 (audio), link 3 (audio), link 4 (audio)
R Azyara Berzon discusses the Halacha of Shemiras HaMikdash: link (audio)
R Baruch Simon examines the Midah of Histapkus: link (audio)
R’ Yissocher Frand, based on the commentary of the Ramban, explains why Parshas Nedarim was given to the Roshei HaMatos:
http://torah.org/learning/ravfrand/5765/matos.html
R’ Mayer Twersky analyzes the positive nature of abstinence:
http://www.torahweb.org/torah/2010/parsha/rtwe_matos.html