When Larry is showing Amita and Charlie his "new" car, his reserved parking sign reads "Cal Sci Mathematics." Dr. Fleinhardt is a physicist, not a mathematician. Even though Math and Physics are usually part of the same division at a university, they are still separate departments.
When Larry and Charlie are talking in Charlie's office and David comes in to ask about the photo location analysis, when David walks into the office, the shadow of the boom mic is visible in the upper right-hand corner of the screen.