Black and White recent happenings thread!

Where do you guys get the exp share from? I know you can get one from castelia city, but I dunno where.

In Castelia City, the front area where the Pokemon Center is, there's a building with a green door, called the "Battle Company". Both floors you can go to with the elevator have numerous trainers, the 47th floor has a scientist that will give you the Scope Lens, and on the 55th floor, if you battle all the people and then fight the janitor in the back, he'll give you the EXP. Share for beating him.