Continuity mistake: Jimmy gets ambushed. One gang member holds a gun close to Jimmy's face, but in the next shot the guy is way further away from him and not even visible in the shot when Jimmy gets splattered with blood.
Food Fight - S3-E2
Continuity mistake: At the start after Teddy steals Oscar's fries, he eats them, leaving his fork empty. The angle changes and suddenly there are plenty of fries on his fork.
Episode #1.1 - S1-E1
Visible crew/equipment: Right before the first shot of the toxic waste being dumped, in the exterior shot facing Mitch crying in his office, we can see the T-mark taped to the floor under his desk. (00:25:45)
Continuity mistake: When Vaughn's assistant puts down the newspaper in front of him, it switches position to the left between shots. (00:38:20)