What lense can't you live without?

[AlexColeman]

70-200 2.8, 14-24, and 85 1.4

 

[Samanax]

I am curious what everyone finds to be their most versatile and quality lense that they own? Not most expensive or most popular to others, just your top pic that gets the most work.

Currently I like my EF 85mm f/1.8 USM lens and use that the most.