Continuity mistake: Season 2, episode 6. While the guys are digging in the garage, Michael tells Sucre about the website they can use, as C-Note walks in. He closes the door behind him, but misses the catch, and you can see the door start to swing open again behind him as he walks further into the room. Cut to Lincoln for a second, then to a wide shot, and the door is now firmly closed.
Continuity mistake: When the kid returns from the store and opens the trunk, Michael and T-bag both grab a shovel, Michael grabs the green and T-bag grabs the silver handled shovel. The next shot they have switched shovels and keep the switched shovels the rest of the scene.