Outstanding Orator

Outstanding Orator is an achievement/trophy in Fallout: New Vegas which is awarded for successfully passing 50 speech checks.

Exploit
Although this achievement is relatively easy to earn on a complete playthrough without even trying, one can take advantage of various repeatable speech challenges. For example, asking Angela Williams (at Camp McCarran) what she really thinks about Thomas Hildern (Speech 25) can be used for this purpose (after completing the quest There Stands the Grass).