We had an interesting question arise in our Shul this past Yom Yerushalayim. Our shul has a minhag of saying Hallel without a brocho in Shacharis. At one of the minyanim, the chazzan said a brocho at ...
I know that according to the psak of the Shulchan Aruch the Sephardim (among others -- The Gra, many Kehillas in Yerushalayim including Chassidei Karlin, Chassidei Biyan I think, and Chassidei Chabad ...
Halacha (Mishna B'rura 57) indicates that a shatz (leader) should not say "amen" to the congragation's "baruch Hashem ham'vorach l'olam vaed" before repeating that line, as the "amen" would be ...